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  • High Resolution Imaging Camera Landing site DEM datasets

    The digital elevation model datasets contains Tianwen-1 landing site surface terrain data acquired by high resolution camera, with a resolution of 3.5 meters. The high-resolution camera uses the panchromatic linear array push-broom mode to complete the three-dimensional imaging of the landing area at different orbiter. Each data contains a tif data (image), a tfw data (coordinate information) and prj data (projection information).

    Mission:Tianwen-1     Platform:Orbiter

    Data acquired time:2021/3~2021/4 First release time:2021/8/3 The newest release time:2021/8/3 Released Batch:1

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:2.7GB Data format:DEM Version:A State:Open Access

    click here to get dataset >>
  • High Resolution Imaging Camera Landing site DIM datasets

    The digital image model datasets contains Tianwen-1 landing site surface image data acquired by high resolution camera, with a resolution of 0.7 meters. The high-resolution camera uses the panchromatic linear array push-broom mode to complete the three-dimensional imaging of the landing area at different orbiter. Each data contains a tif data (image), a tfw data (coordinate information) and prj data (projection information).

    Mission:Tianwen-1     Platform:Orbiter

    Data acquired time:2021/3~2021/4 First release time:2021/8/3 The newest release time:2021/8/3 Released Batch:1

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:17.9GB Data format:DIM Version:A State:Open Access

    click here to get dataset >>
  • High Resolution Imaging Camera level 2B datasets

    The datasets contains Mars surface image data, acquired by High Resolution Imaging Camera. The level 2B datasets has be added geometric positioning information based on Level 2A datasets. The data is compliant to PDS 4 (Planetary Data System) , each data contains 4 files: data entity, data label, geographic grid and auxiliary data.

    Mission:Tianwen-1     Platform:Orbiter

    Data acquired time:2021/3~2022/8 First release time:2022/6/6 The newest release time:2023/4/3 Released Batch:9

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:490.6GB Data format:2B Version:A State:Open Access

    click here to get dataset >>
  • Moderate Resolution Imaging Camera level 2C datasets

    The datasets contains Mars surface image data, acquired by Moderate Resolution Imaging Camera. The level 2C datasets is performed color interpolation and color correction based on Level 2B datasets. The data is compliant to PDS 4 (Planetary Data System) , each data contains 4 files: data entity, data label (descriptive information of data), geographic grid and thumbnail.

    Mission:Tianwen-1     Platform:Orbiter

    Data acquired time:2021/11~2022/7 First release time:2022/2/14 The newest release time:2023/3/3 Released Batch:8

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:493.6GB Data format:2C Version:A State:Open Access

    click here to get dataset >>
  • Tianwen-1 Mars Global Color Orthomosaic Chart 76m

    The datasets are chart map products made from images obtained by Moderate Resolution Imaging Camera, which have undergone photometric correction, geometric correction, global mapping, and other processes, with a total of 36 map charts. Each data contains a tif image data. The resolution of the image is 76m.

    Mission:Tianwen-1     Platform:Orbiter

    Data acquired time:2021/11~2022/7 First release time:2024/6/3 The newest release time:2024/6/3 Released Batch:1

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:79.1GB Data format:IMAGE Version:A State:Open Access

    DOI:https://dx.doi.org/10.12350/CLPDS.GRAS.TW1.MoRIC-DOM_076_Charts.vA

    click here to get dataset >>
  • Tianwen-1 Mars Global Color Orthomosaic 76m

    The dataset is global map product made from images obtained by Moderate Resolution Imaging Camera, which have undergone photometric correction, geometric correction, global mapping, and other processes. Each data contains a tif image data. The resolution of the image is 76m.

    Mission:Tianwen-1     Platform:Orbiter

    Data acquired time:2021/11~2022/7 First release time:2024/6/3 The newest release time:2024/6/3 Released Batch:1

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:46.0GB Data format:IMAGE Version:A State:Open Access

    DOI:https://dx.doi.org/10.12350/CLPDS.GRAS.TW1.MoRIC-DOM_076_Global.vA

    Suggested Citation: J. Liu, X. Ren, W. Yan et al., A 76-m per pixel global color image dataset and map of Mars by Tianwen-1, Science Bulletin, https:// doi.org/10.1016/j.scib.2024.04.045

    click here to get dataset >>
  • Mars Mineralogical Spectrometer level 2B datasets

    The datasets contains mineral spectral data of Mars surface, acquired by Mars Mineralogical Spectrometer. The level 2B datasets has be added geometric positioning information based on Level 2A datasets. The data is compliant to PDS 4 (Planetary Data System) , each data contains 4 files: data entity, data label (descriptive information of data), geographic gird and Auxiliary data.

    Mission:Tianwen-1     Platform:Orbiter

    Data acquired time:2021/11~2023/2 First release time:2022/2/14 The newest release time:2023/4/3 Released Batch:12

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:203.7GB Data format:2B Version:A State:Open Access

    click here to get dataset >>
  • Mars Orbiter Scientific Investigation Radar level 2B datasets

    The datasets contains very low frequency data during the Earth-Mars transition phase, acquired by Mars Orbiter Scientific Investigation Radar in very low frequency model. The level 2B datasets has be added geometric positioning information based on Level 2A datasets. The data is compliant to PDS 4 (Planetary Data System) , each data contains a pair of files: data entity and data label (descriptive information of data).

    Mission:Tianwen-1     Platform:Orbiter

    Data acquired time:2202/7~2021/1 First release time:2021/8/3 The newest release time:2021/8/3 Released Batch:1

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:1.5GB Data format:2B Version:A State:Open Access

    click here to get dataset >>
  • Mars Ion and Neutral Particle Analyzer level 2B datasets

    The datasets contains Martian space environment plasma and neutral particle data, acquired by Mars Ion and Neutral Particle Analyzer. The level 2B datasets has be added geometric positioning information based on Level 2A datasets. The data is compliant to PDS 4 (Planetary Data System) , each data contains a pair of files: data entity and data label (descriptive information of data).

    Mission:Tianwen-1     Platform:Orbiter

    Data acquired time:2021/6~2022/11 First release time:2021/8/3 The newest release time:2023/1/6 Released Batch:13

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:463.8GB Data format:2B Version:A State:Open Access

    click here to get dataset >>
  • Mars Energetic Particles Analyzer level 2B datasets

    The datasets contains energetic particles spectrum and flux data in Mars orbit and Earth-Mars transfer orbit , acquired by Mars Energetic Particles Analyzer. The level 2B datasets has be added geometric positioning information based on level 2A datasets. The data is compliant to PDS 4 (Planetary Data System) , each data contains a pair of files: data entity and data label (descriptive information of data).

    Mission:Tianwen-1     Platform:Orbiter

    Data acquired time:2020/7~2022/11 First release time:2022/5/5 The newest release time:2023/1/6 Released Batch:9

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:29GB Data format:2B Version:B State:Open Access

    click here to get dataset >>
  • Mars Orbiter Magnetometer level 2C datasets

    This data is the space environment magnetic field information obtained by the Mars orbiter Magnetometer. The level 2C data is processed jointly based on the 2B data of the inner and outer double probes, and the interference of background noise is deducted.The data is compliant to PDS 4 (Planetary Data System), each data contains a pair of files: data entity and data label (descriptive information of data).

    Mission:Tianwen-1     Platform:Orbiter

    Data acquired time:2021/11~2021/12 First release time:2023/3/3 The newest release time:2023/3/3 Released Batch:1

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:1.2GB Data format:2C Version:A State:Open Access

    click here to get dataset >>
  • Navigation and Terrain Camera level 2C datasets

    The datasets contains images of probe targets on Martian surface around the excurse route, acquired by Navigation and Terrain Camera.The level 2C datasets is performed color restoration and color correction based on Level 2B datasets.The data is compliant to PDS 4 (Planetary Data System) , each data contains a pair of files: data entity and data label (descriptive information of data).

    Mission:Tianwen-1     Platform:Rover

    Data acquired time:2021/6~2022/4 First release time:2021/8/3 The newest release time:2022/6/6 Released Batch:12

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:16.6GB Data format:2C Version:A State:Open Access

    click here to get dataset >>
  • Multispectral Camera level 2B datasets

    The datasets contains multi-band spectral image data of Mars surface, acquired by Multispectral Camera. The level 2B datasets has be added geometric positioning information based on Level 2A datasets. The data is compliant to PDS 4 (Planetary Data System) , each data contains a pair of files: data entity and data label (descriptive information of data).

    Mission:Tianwen-1     Platform:Rover

    Data acquired time:2021/6~2022/2 First release time:2022/2/14 The newest release time:2022/4/6 Released Batch:3

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume: 322.6MB< Data format:2B Version:A State:Open Access

    click here to get dataset >>
  • Mars Surface Composition Detector level 2B datasets

    The datasets contains visible and near infrared spectrum data of rocks, soil and sand dunes around the excurse route, acquired by Mars Surface Composition Detector. The level 2B datasets has be added geometric positioning information based on Level 2A datasets. The data is compliant to PDS 4 (Planetary Data System) , each data contains a pair of files: data entity and data label (descriptive information of data).

    Mission:Tianwen-1     Platform:Rover

    Data acquired time:2021/6~2022/2 First release time:2021/8/3 The newest release time:2022/4/6 Released Batch:6

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:126.4MB Data format:2B Version:A State:Open Access

    click here to get dataset >>
  • Mars Rover Penetrating Radar level 2B datasets

    The datasets contains Martian surface shallow structure data of excurse route, acquired by Mars Rover Penetrating Radar. The level 2B datasets has be added geometric positioning information based on Level 2A datasets. The data is compliant to PDS 4 (Planetary Data System) , each data contains a pair of files: data entity and data label (descriptive information of data).

    Mission:Tianwen-1     Platform:Rover

    Data acquired time:2021/6~2022/4 First release time:2021/8/3 The newest release time:2022/6/6 Released Batch:11

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:2.6GB Data format:2C Version:A State:Open Access

    click here to get dataset >>
  • Mars Climate Station level 2C datasets

    The datasets contains Meteorological data and voice data on Martian surface, acquired by Mars Climate Station. The level 2C datasets is generated based on Level 2B datasets, including 3 temperature data, 1 pressure data, 1 wind speed data and 1 wind direction data. The data is compliant to PDS 4 (Planetary Data System) , each data contains a pair of files: data entity and data label (descriptive information of data).

    Mission:Tianwen-1     Platform:Rover

    Data acquired time:2021/6~2022/4 First release time:2021/8/3 The newest release time:2022/6/6 Released Batch:11

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:48.4MB Data format:2C Version:A State:Open Access

    click here to get dataset >>
  • Mars Rover Magnetometer level 2C datasets

    The datasets contains background magnetic field information of landing area and Zhurong rover's inspection area, acquired by Mars Rover Magnetometer. The level 2C datasets is generated by jointly processing of the dual probes of level 2B data and deducting background noise. The data is compliant to PDS 4 (Planetary Data System) , each data contains a pair of files: data entity and data label (descriptive information of data).

    Mission:Tianwen-1     Platform:Rover

    Data acquired time:2021/6~2022/4 First release time:2022/5/5 The newest release time:2022/6/6 Released Batch:2

    Producer:NAOC/GRAS Email:lpdc@nao.cas.cn

    Volume:82.1MB Data format:2C Version:A State:Open Access

    click here to get dataset >>

TianWen-1

Tianwen-1 mission is the first mission to explore Mars in China, and China become the first nation to orbit, land, release a rover, and deploy smallsats during its first foray into Martian space. Tianwen-1 consisting of 3 parts: an orbiter, lander and the Zhurong rover. The mission was launched from the Wenchang Spacecraft Launch Site on 23 July 2020 on a Long March 5 heavy-lift launch vehicle. After seven months of transit through the inner Solar System, the spacecraft entered Martian orbit on 10 February 2021. For the next three months the probe studied the target landing sites from a reconnaissance orbit. On 15 May 2021, the lander/rover portion of the mission successfully touched down on Mars.

The mission's scientific objectives include: investigation of Martian surface geology and internal structure, search for indications of current and past presence of water, and characterization of the space environment and the atmosphere of Mars. In order to complete the scientific task, it carries 13 scientific instruments, Moderate Resolution Imaging Camera, High Resolution Imaging Camera, Mars Orbiter Scientific Investigation Radar, Mars Mineralogical Spectrometer, Mars Orbiter Magnetometer, Mars Ion and Neutral Particle Analyzer, Mars Energetic Particles Analyzer onboard orbiter, and Navigation and Terrain Camera, Multispectral Camera, Mars Rover Penetrating Radar, Mars Surface Composition Detector, Mars Rover Magnetometer, Mars Climate Station onboard rover.

  • Moderate Resolution Imaging Camera(MoRIC)

    with a resolution of 100 m from a 400 km altitude. It takes color photos in visible band. It is used to obtain the global image of Mars.

  • High Resolution Imaging Camera(HiRIC)

    with a resolution of 2.5 m from a 256 km altitude in panchromatic mode, 10 m in color mode. It is used to obtain fine image of key areas on Mars.

  • Mars Orbiter Scientific Investigation Radar(MOSIR)

    aims to explore the Martian surface and subsurface water-ice by means of the dual-polarization echo characteristics of radar. It is also be used to detect the very low frequency data during the seven months of transit through the inner Solar System.

  • Mineralogical Spectrometer(MMS)

    utilizes the visible and near infrared imaging spectrometer with detection wavelengths ranging from 0.45 to 3.4 µm to investigate and analyze the Martian surface composition. It also investigate the distribution of regolith types and subsurface structure of Mars.

  • Mars Orbiter Magnetometer(MOMAG)

    is used to map Martian magnetic field and help understanding the mechanism of interaction between the solar wind magnetic field and Mars ionosphere.

  • Mars Ion and Neutral Particle Analyzer(MINPA)

    measures the flux of ions in space environment, distinguishes the main ions and obtains their physical parameters such as the density, velocity and temperature.

  • Mars Energetic Particles Analyzer(MEPA)

    obtains the energy spectrum, flux and elemental composition of energy electrons, protons, α particles and ions.

  • Mars Surface Composition Detector(MarSCoDe)

    combines laser-induced breakdown spectroscopy (LIBS), short wave infrared spectroscopy (SWIR) and micro-imaging camera. LIBS (240-850 nm) is used to analyse element composition. SWIR (850nm-2400nm) is used to analyse the minerals and rocks. Micro-imaging camera (900-1000nm) is used to obtain high resolution image of probe targets.

  • Multispectral Camera(MSCam)

    investigates the mineral components to establish the relationship between Martian surface water environment and secondary mineral types, and to search for historical environmental conditions for the presence of liquid water.

  • Navigation and Terrain Camera(NaTeCam)

    is used to construct topography maps, extract parameters such as slope, undulation and roughness, investigate geological structures, and conduct comprehensive analysis on the geological structure of the surface parameters.

  • Mars Rover Penetrating Radar(RoPeR)

    two frequencies, to image about 100 m (330 ft) below the Martian surface, obtain the martian shallow geological structure data.

  • Mars Rover Magnetometer(RoMAG)

    obtains the fine-scale structures of crustal magnetic field based on mobile measurements on the Martian surface.

  • Mars Climate Station(MCS)

    measures the temperature, pressure, wind velocity and direction of the surface atmosphere, and as a microphone to capture Martian sounds.

根据嫦娥五号数据的处理情况及相关的政策法规,对嫦娥五号3个有效载荷相关级别的科学数据产品进行了发布,共发布数据文件121831个数据文件,数据总量4047525.94MB。

各载荷科学数据的详细发布情况如下:

载荷名称 发布级别 文件数 数据量
MoRIC DOM-Global-Chart-76m 36 81029.73MB
DOM-Global-76m 1 47132.18MB
HiRIC LandingSite-DEM-3.5m 1 1065.24MB
LandingSite-DIM-0.7m 16 7391.11MB
2B 608 363466.22MB
2B 608 361584.39MB
2B 608 358679.44MB
2B 6584 63330.83MB
2B 562 1810.49MB
2B 5950 505202.71MB
2B 5468 22670.15MB
2B 52 12.62MB
2B 5596 215441.13MB
2B 72 981.80MB
2B 148 157506.80MB
2B 18 1.33MB
2B 2800 348558.76MB
2B 20 251.91MB
2C 2378 9020.78MB
2C 6228 598306.36MB
2C 73473 883217.97MB
2B 352 1506.32MB
2B 188 170.26MB
2B 124 124.47MB
2B 118 0.91MB
2B 158 1.59MB
2B 2 0.02MB
2C 222 46.24MB
2C 128 3.33MB
2B 48 192.22MB
2B 98 6.59MB
2B 5152 346.28MB
2C 1310 7864.93MB
2C 1310 7864.93MB
2C 304 82.06MB
2C 218 595.76MB
2C 218 595.75MB
2C 218 595.86MB
2C 218 595.81MB
2C 218 270.68MB

The ground application system defines and explains the released standard data products of the first Mars exploration mission, which can be served as the basis for the use of standard data products.

1.Abbreviation

Table 1-1: Scientific instrument abbreviation list

Plantform Chinese name English name Abbreviation
Orbiter 高分辨率相机 High Resolution Imaging Camera HiRIC
中分辨率相机 Moderate Resolution Imaging Camera MoRIC
火星矿物光谱分析仪 Mars Mineralogical Spectrometer MMS
环绕器次表层探测雷达 Mars Orbiter Scientific Investigation Radar MOSIR
火星离子与中性粒子分析仪 Mars Ion and Neutral Particle Analyzer MINPA
火星能量粒子分析仪 Mars Energetic Particles Analyzer MEPA
火星磁强计 Mars Orbiter Magnetometer MOMAG
Rover 导航地形相机 Navigation and Terrain Camera NaTeCam
火星车次表层探测雷达 Mars Rover Penetrating Radar RoPeR
火星表面成分探测仪 Mars Surface Composition Detector MarSCoDe
火星气象测量仪 Mars Climate Station MCS
多光谱相机 Multispectral Camera MSCam
火星表面磁场探测仪 Mars Rover Magnetometer RoMAG

2.Scientific data product classification

The ground application system preprocesses the detection data of the scientific instrument carried by Tianwen-1, and produces standard data of various levels. The scientific data products released are level 2B or 2C.

Table 2-1: Definitions of the scientific data level

Level title Data processing description
Frame data RAW The downlink data are processed by local stations for demodulation, frame synchronization, descrambling, and RS decoding to form data with complete structure and byte-aligned data. It is the preprocessed input data.
0级数据 Level 0A Level 0A, is source packet data that received at a single ground station for each payload
Level 0B Level 0B, is on the basis of level 0A, after deduplicating, uncompressing, sorting by acquisition time and frame number, then combine into complete data.
1级数据 Level 1 Level 1 data is generated, on the basis of Level 0B, after numerically converting temperature, voltage, current and other instrument parameters, and reorganizing according to observation cycles.
2级数据 Level 2A Level 2A data created after correction using calibration results on the basis of level 1.
Level 2B Level 2B added geometric information base on level 2A
Level 2C Level 2C processed according to the needs of each scientific instrument based on level 2B.

3.Data file naming

The naming specification of CE-5 data product is as follow:

HXX_st_pl_ty_dc_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.lv.Fields separated by ‘_’ mean.

3.1 Mission

HX1: mission identification, HX1-Or means Tianwen-1Orbiter, HX1-Ro means Tianwen-1 Rover..

3.2 Ground station

St means data source (ground station),including GRAS and BACC;the st of lever 2B, 2C all are GRAS.

3.3 Scientific instrument

Pl means the abbreviation of scientific instruments,then added work mode and data number.

For example: MoRIC-F-001means the 1st image of MoRIC in full frame mode.。

The pl means can be check in Table 1.

3.4 Data products type

Ty means the type of data products:SCI—scientific data.

3.5 Time characteristic of data

dc means time characteristic of data:

R——Real-time data;

P——Playback data;

N——Indistinguishable data (mixed data).

3.6 Start time and end time

The start time and end time all are UTC, yyyymmddhhmiss means the start time, yyyy means year, mm means month, dd means day, hh means hour, mi means minute, ss means second.

YYYYMMDDHHMISS means the end time, YYYY means year, MM means month, DD means day, HH means hour, MI means minute, SS means second.

The start and end time of the level 2 data file is the time of the first record and the time of the last record in the data file. If the data is a single image, the start time and end time are the same, which is the actual acquisition time of this image.

3.7 Detection cycle number

In level 2 data, the 0b means detection cycle number, the value is 00001-99999.

3.8 Product version

ver means product version, from A to Z, the first version is A, the last version is Z.

3.9 Product level

lv means product level:

All levels of scientific data or auxiliary data suffix are 2B or 2C.

Corresponding PDS tag file suffixes are 2BL or 2CL.

4.Data product format description

The standard data product for the first Mars exploration mission was designed based on the Version 1.12.0 of the Planetary Data System Standards Reference published on the website in June 2019. Level 2 data products are stored in accordance with the specification Planetary Data System Standards Reference (Version 1.12.0, April, 2019), and the metadata information in the data label adopts the PDS data dictionary PDS4 Data Dictionary: Abridged-Version" 1.12.0.0. The following is a description of the released level 2 data products.

4.1 Level 2 data product structure

Level 2 data products consist of two parts: data label and data objec:

  • 1)A data product contains only one data label, but it can contain multiple data objects;
  • 2)Data tags and data objects are stored as separate files;
  • 3)The data label adopts the file of XML format.
  • 4)Scientific data is expressed as data objects. The TW-1 mission includes six types of data including image data, spectral data, radar detection data, magnetic field detection data, space environment detection data, and sound data.
4.1.1 MOSIR data storage structure

Each level 2B data product includes a data label and a Table_Binary type data object for storing scientific data and geometric positioning information.

Table 4-1:MOSIR data storage structure description

product Scientific data tag
Level 2B Table_Binary XML
4.1.2 MINPA data storage structure

Each level 2B data product includes a data label and a Table_Character type data object for storing scientific data and geometric positioning information.

Table 4-2:MINPA data storage structure description

product Scientific data tag
Level 2B Table_Character XML
4.1.3 NaTeCam data storage structure

Each level 2C data product includes a data tag and an Array_3D_Image type data object for storing color images, the content of the frame header information and geometric positioning information.

Table 4-3:NaTeCam data storage structure description

product Scientific data tag Array dimension
Level 2C Array_3D_Image XML Line, column, color
4.1.4 RoPeR data storage structure

Each level 2B data product includes a data tag and a Table_Binary type data object for storing scientific data and geometric positioning information such as the position and attitude of the rover, and the landing point location information.

Table 4-4:RoPeR data storage structure description

product Scientific data tag
Level 2B Table_Binary XML
4.1.5 MarSCoDe data storage structure description

Each level 2B data product contains a data label and a Table_Character type data object for storing spectral data, and the content of geometric positioning information.

Table 4-5:MarSCoDe data storage structure description

product Scientific data tag
Level 2B Table_Character XML
4.1.6 MCS data storage structure

Each level 2C data product contains a data label and a Table_Character type data object for storing air temperature, pressure, wind field, and geometric information such as sun incident angle and azimuth angle, and position of the rover and the location of the landing site.

Table 4-6:MCS data storage structure description

product Scientific data tag
Level 2C Table_Character XML
4.1.7 MoRIC data storage structure

Each 2C-level data product includes a data tag, a data object of type Array_3D_Image for storing color images, a data object of type Table_Character for storing the geometric positioning grid of the image.

Table 4-7:MoRIC data storage structure description

Product Scientific data Geometric positioning grid Tag Array dimension
Level 2C Array_3D_Image Table_Character XML Line, column, color
4.1.8 MMS data storage structure

Each Level 2B data product includes a data tag, a data object of type Array_3D_Spectrum for storing scientific data, a data object of type Table_Character for storing scientific data frame headers (auxiliary data), and a data object of type Table_Character for storing scientific data Geometrically position grid data.

Table 4-8:MMS data storage structure description

Product Scientific data auxiliary data Geometric positioning grid Tag Array dimension
Level 2B Array_3D_Spectrum Table_Character Table_Character XML Time、band、line
4.1.9 MSCam data storage structure

Each 2B-level data product includes a data tag, a data object of type Array_2D_Image for storing the image.

Table 4-9:MSCam data storage structure description

Product Scientific data Tag
Level 2B Array_2D_Image XML
4.1.10 MEPA data storage structure

Each 2B-level data product includes a data tag, a data object of type Table_Character for storing the scientific data and geometric positioning information.

Table 4-10:MSCam data storage structure description

Product Scientific data Tag
Level 2B Table_Character XML
4.1.11 RoMAG data storage structure

Each 2C-level data product includes a data tag, a data object of type Table_Character for storing the scientific data.

Table 4-11:MSCam data storage structure description

Product Scientific data Tag
Level 2C Table_Character XML
4.1.12 HiRIC data storage structure

Each level 2B data product includes a data tag, a data object of type Array_2D_Image to store the scientific data, a data object of type Table_Character to store the geometrically positioned grid data, and a data object of type Table_Character to store the image frame header(auxiliary data);

Table 4-12:HiRIC data storage structure description

Product Scientific data Auxiliary data Geometric position grid Labal Array dimension
Level 2B Array_2D_Image Table_Character Table_Character XML time (row), line
4.1.13 MOMAG data storage structure

Each 2C-level data product includes a data tag, a data object of type Table_Character for storing color images.

Table 4-13:MOMAG data storage structure description

Product Scientific data Tag
Level 2C Table_Character XML
4.2 Tianwen-1 data type description
4.2.1 Binary data type

TW-1 data products using binary storage include UnsignedLSB4, UnsignedLSB2, SignedLSB2,UnsignedMSB4, UnsignedMSB2, UnsignedByte, IEEE754LSBSingle, IEEE754MSBSingle, UnsignedBitString.

4.2.2 Character data type

TW-1 data products stored in character type include ASCII_Real, ASCII_String, ASCII_Integer,ASCII_Date_Time_YMD_UTC,ASCII_Numeric_Base16. Attribute values of Table_character data and tag both use the above data types .

5.Product list appendix

5.1 Product list of HiRIC

Product level Data product file name Format File description
DEM
DIM
HX1_GRAS_XXX_AAA_BBBB_ ddmmssNdddmmssE _V.tif GeoTiff Advanced data products
HX1_GRAS_XXX_AAA_BBBB_ ddmmssNdddmmssE _V.tfw tfw Coordinate information file
HX1_GRAS_XXX_AAA_BBBB_ ddmmssNdddmmssE _V.prj prj Projection information file (ESRI format)

Note: XXX represents the type of product data, that is, DEM or DIM ; AAA represents resolution; BBBB represents frame number; ddmmssNdddmmssE represents the latitude and longitude position of the center of the frame, dd/ddd is degrees, mm is minutes, ss Is the second, N represents the location of the north latitude (ie N) or south latitude (ie S) identification, E represents the longitude identification (ie E, represents the east longitude, the value range is 0 ~ 360 °); V represents the version number.

5.2 Product list of MOSIR

Product level Data product file name Format File description
2B HX1-Or_GRAS_*** (-XXX)_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2B Binary Level 2B (Table_Binary)
HX1-Or_GRAS_*** (-XXX)_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2BL XML Level 2B(data tag)
****represent MOSIR-VLF、MOSIR-H、MOSIR- HFR、MOSIR- LFR、MOSIR- HFI、及MOSIR- LFI

Note: (-XXX) only for MOSIR-HFR and MOSIR-LFR data, corresponding to data with different time window sizes in different modes, such as MOSIR-HFR-095, corresponding to detection data with a time window size of 95μs in high frequency mode; MOSIR-LFR-120 , Corresponding to detection data with a time window of 120μs in low frequency mode; MOSIR-LFR-HFW, corresponding to high frequency waveform data in low frequency mode.

Level 2B:

MOSIR-H, represents altimetry data;

MOSIR-VLF, represents very low frequency detection data;

MOSIR-HFR, represents the original echo high-frequency data;

MOSIR- LFR, represents the original echo low-frequency data;

MOSIR-HFI, represents imaging echo high-frequency data (on-board processing result);

MOSIR-LFI, represents low-frequency imaging echo data (on-board processing result)

5.3 Product list of MINPA

Product level Data product file name Format File description
2B HX1-Or_GRAS_*** _SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2B ASCII Level 2B(Table_Character)
HX1-Or_GRAS_*** _SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2BL XML Level 2B(data tag)
***Refer to Note 1 for the specific naming and explanation of scientific data representing Mode 1~Mode 13

Note 1:

MINPA–MOD1-DEF, represents the default mode (table address 003300);

MINPA–MOD2-DEF, represents the default mode (table address F02D00);

MINPA–MOD3-HER, represents high energy resolution mode (table address 017400);

MINPA–MOD4-MT, represents the magnetic tail mode (table address 005F00);

MINPA–MOD5-LEI, represents low-energy ion mode (table address F13E00);

MINPA–MOD6-HTR, represents high time resolution mode (table address 01BD00);

MINPA–MOD7-FR, represents full resolution mode (table address 00AC00);

MINPA–MOD8-FR, represents full resolution mode (table address F0B000);

MINPA–MOD9-SW, represents solar wind mode (table address 00FF00);

MINPA–MOD10-SW, represents solar wind mode (table address F10300);

MINPA–MOD11-SW, represents solar wind mode (table address F06C00);

MINPA–MOD12-I, represents the ionospheric mode (table address 013A00);

MINPA–MOD13-NP, represents the neutral particle mode (table address 017100);

Note 2:

In addition to the above products, MINPA also includes a description file of calibration parameters. The file describes the correspondence between the pitch angle number and the angle center value and the center energy of ions and neutral particles in different modes. The file is named Calibration data description.pdf is quoted in the reference list field of the data label.

5.4 Product list of NaTeCam

Product level Data product file name File description
2C HX1-Ro_GRAS_pl2-XXX_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2C Pl2 value:
NaTeCamA-F: Full frame data of A camera
NaTeCamB-F: Full frame data of B camera
XXX is the frame count, the data in a detection period is automatically numbered in chronologic -al order, and the number is from 001 to 999
HX1-Ro_GRAS_pl2-XXX_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2CL
5.5 Product list of RoPeR

Product level Data product file name Format File description
2B HX1-Ro_GRAS_***_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2B Binary Level 2B(Table_Binary)
HX1-Ro_GRAS_***_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2BL XML Level 2B(data tag)
***represent RoPeR-LF-R、RoPeR-LF-RI、RoPeR-HF-HH、RoPeR-HF-HV、RoPeR-HF-VH、RoPeR-HF-VV

Level 2B:

RoPeR-LF-R, represents the real part mode data of the low frequency channel;

RoPeR-LF-RI, represents the real and imaginary mode data of the low-frequency channel;

RoPeR-HF-HH, represents the HH polarization data of the high frequency channel;

RoPeR-HF-HV, represents HV polarization data of high frequency channel;

RoPeR-HF-VH, represents the high frequency channel VH polarization data;

RoPeR-HF-VV, represents the high frequency channel VV polarization data.

5.6 Product list of MCS

Product level Data product file name Format File description
2C HX1-Ro_GRAS_MCS-Tra_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ ob _ver.2CL XML 2C level conventional measurement mode data tag file
HX1-Ro_GRAS_MCS-Tra_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ ob _ver.2C ASCII 2C level conventional measurement mode data
HX1-Ro_GRAS_MCS-Man_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ ob _ver.2C XML 2C level motorized measurement mode data tag file
HX1-Ro_GRAS_MCS-Man_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ ob _ver.2C ASCII 2C level maneuver measurement mode data

Note: Ro represents the lander and rover; RPCU represents the Mars rover load controller; MCS-Tra represents conventional measurement data; MCS-Man represents maneuver measurement data; MCS-Audio represents sound data

5.7 Product list of MoRIC

Product level Data product file name File description
2C HX1-Or_GRAS_pl-XXXX_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2C Pl valeu
MoRIC-F:represents full-frame image data
MoRIC-S-2: represents 2:1 sampling
MoRIC-S-4: represents 4:1 sampling
MoRIC-S-8: represents 8:1 sampling
MoRIC-W: represents windowing data
XXXX is the "output image frame number" of each image after framing, which can be obtained from the level 1 auxiliary data
GEO: Geometry position grid file
HX1-Or_GRAS_pl-XXXX_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2CL
HX1-Or_GRAS_pl-XXXX_GEO_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2C

5.8 Product list of MMS

Product level Data product file name Format File description
2B HX1-Or_GRAS_***_ty_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2B Binary Level 2B(Array_3D_Image)
HX1-Or_GRAS_*** _ty_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2BL XML格式 Level 2B(data tag)
HX1-Or_GRAS_*** _AUX_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2B ASCII码 Level 2B(auxiliary data)
HX1-Or_GRAS_*** _GEO_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2B ASCII码 2Level 2B(Geometry position grid file)
*** Take the value listed in "Class 2B file name" in the table above
The probe data ty field is "SCI", and the calibration data ty field is "CAL". Among them, for the data of MMS-C-S-V and MMS-C-S-N (including SCI and CAL), there is no corresponding GEO file

5.9 Product list of MSCam

Product level Data product file name Format File description
2B级 HX1-Ro_GRAS_MSCam-W-no-kk-xxxx- yy_ty_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2B Binary Level 2B data product (image data of type Array_2D_Image), no represents spectral channel, the value range is 1~8, that is, the 1st spectral channel to the 8th spectral channel, MSCam-W represents the windowing mode, xxxx is the frame count; yy It is the number of the detection point; ty takes SCI and CAL.
HX1-Ro_GRAS_MSCam-W-no-kk-xxxx-yy_ty_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2BL XML Level 2B data tag
Note: There are no level 2B panchromatic channels products.

MSCam-W-1 represents multispectral camera 1-channel data (windowed image data)

MSCam-W-2 represents the 2-channel data of the multispectral camera, and so on to the 8th channel (windowing image data)

MSCam-W-P represents multispectral camera panchromatic channel data (windowed image data)

5.10 Product list of MEPA

Product level Data product file name Format File description
2B级 HX1-Or_GRAS_MEPA-LP_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2BL XML Light particle energy spectrum level 2B data
HX1-Or_GRAS_MEPA-LP_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2B ASCII
HX1-Or_GRAS_MEPA-HP_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2BL XML Heavy ion level 2B data
HX1-Or_GRAS_MEPA-HP_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2B ASCII
5.11 Product list of RoMAG

Product level Data product file name Format File description
2C级 HX1-Ro_GRAS_*** _SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2C Binary Level 2C(Table_ Character)
HX1-Ro_GRAS_*** _SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2CL XML Level 2C(data tag)
****represent RoMAG-DB
5.12 Product list of HiRIC

Product level Data product file name File description
2B级 HX1-Or_GRAS_plCCD_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2B The values of PlCCD are as follows: : -F\-R\-G\-B\-V are the CCD panchromatic, red, green, blue, and near-infrared spectral bands respectively HiRIC-CCD1-F, HiRIC-CCD1-R, HiRIC-CCD1-G, HiRIC-CCD1-B, HiRIC-CCD1-V HiRIC-CCD2-F, HiRIC-CCD2-R, HiRIC-CCD2-G, HiRIC-CCD2-B, HiRIC-CCD2-V HiRIC-CCD3-F, HiRIC-CCD3-R, HiRIC-CCD3-G, HiRIC-CCD3-B, HiRIC-CCD3-V GEO is grid file AUX is the auxiliary data file -XXXX: image frame number, taken from the "frame number" in the level 1 auxiliary data
HX1-Or_GRAS_plCCD_AUX_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2B
HX1-Or_GRAS_plCCD_SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2BL
HX1-Or_GRAS_plCCD_GEO_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2B
5.13 Product list of MOMAG

Product level Data product file name Format File description
2C HX1-Or_GRAS_*** _SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2C ASCII Level 2C(Table_ Character)
HX1-Or_GRAS_*** _SCI_N_yyyymmddhhmiss_YYYYMMDDHHMISS_ob_ver.2CL XML Level 2C(data tag)
**** represent MOMAG-DB as the detection data after background deduction

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Data reference:

      You can refer to the following specifications::

      Ground Research and Application System of China’s Lunar and Planetary Exploration Program. XXXX Dataset(For example:Chang’E 4 Panoramic Cameras Dataset). China National Space Administration, 2020. https://moon.bao.ac.cn

Acknowledgement:

      You can refer to the following specifications:

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