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Orbital Atmospheric Density
Using in-situ detection technology, we obtain the spatial and temporal distribution of atmospheric density around a 500 km sun-synchronous orbit, as well as atmospheric density across different locations at the same altitude. This data provides essential support for scientists and researchers in monitoring weather systems, conducting climate change studies, and analyzing atmospheric phenomena.
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Application
text-iconSatellite Orbit Prediction
By assimilating atmospheric density data, we can reduce the forecast errors of thermospheric atmospheric models, thereby optimizing satellite mission planning, ensuring satellite operational safety, and meeting the demands of modern high-precision orbit prediction.
text-iconReentry Trajectory Calculation
Precise analysis of the forces and combustion processes during a spacecraft's reentry into Earth's atmosphere, coupled with accurate orbital drag assessment, is instrumental in both spacecraft design and mission safety assurance.
text-iconStudies in atmospheric dynamics
To support research into the structure and dynamics of the upper atmosphere, enhance our understanding of atmospheric circulation, foster interdisciplinary research between atmospheric science and space physics, and deepen our knowledge of the Earth system's overall functioning.
text-iconSpace exploration
A deep understanding of the physical properties of the Earth's atmosphere, such as composition, temperature, and pressure, and the revelation of its evolutionary patterns, can help us better comprehend our planet. This knowledge can provide a scientific basis for predicting climate change and searching for habitable exoplanets.
Data Sheets
L2Orbital Atmospheric Density
ContentsObtain the spatiotemporal distribution of atmospheric density in a sun-synchronous orbit of about 500 km, allowing for simultaneous acquisition of orbital atmospheric density at different spatial locations at the same altitude.
File NamingatmDns_DQMD_LLL.YYYYMMDD_HHMMSS_UUUUU_L2.txt
File Formattxt
Data Domain Information
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Preview
Columns 1-6 represent UTC time in the format YYYY MM DD hh mm ss.
Column 7 indicates geographic longitude in degrees.
Column 8 shows geographic latitude in degrees.
Column 9 represents the orbital altitude in kilometers.
Column 10 displays local time in hours.
Column 11 presents atmospheric mass density in kg/m³.
Column 12 is the data quality flag ID: 0 indicates uncalibrated data, usually caused by the payload sensor not facing the wind due to satellite attitude; 1 indicates valid data; and 2 represents invalid data, often caused by platform venting or sensor power-on venting.
Technical Specifications
Temporal Resolution: <2 seconds
Detection accuracy: better than 10%
Daily data growth from a single satelliteAbout 4MB
Image
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Preview
L1Level 1 orbital atmospheric density product
ContentsSensor pressure and temperature data.
File NamingatmPreTem_DQMD_LLL.YYYYMMDD_HHMMSS_UUUUU_L1.txt
File Formattxt
Data Domain Information
dddde
Preview
Columns 1-6 represent UTC time in the format YYYY MM DD hh mm ss.
Column 7 indicates the analog voltage (V) of sample chamber pressure 1.
Column 8 shows the physical value (Pa) of sample chamber pressure 1.
Column 9 indicates the analog voltage (V) of sample chamber pressure 2.
Column 10 shows the physical value (Pa) of sample chamber pressure 2.
Column 11 indicates the analog voltage (V) of sample chamber temperature.
Column 12 shows the physical temperature (K) of the sample chamber.
Column 13 indicates the voltage value (V) of the power supply detection.
Column 14 indicates the voltage value (V) of the filament detection.
Column 15 indicates the voltage value (V) of the electron current detection.
Daily data growth from a single satelliteAbout 6MB
L0Raw payload data packet
ContentsRaw observation data of the payload
File NamingatmPTori_DQMD_LLL.YYYYMMDD_HHMMSS_UUUUU_L0.txt
File Formattxt
Data Domain Information
dddde
Preview
Columns 1-6 represent UTC time in the format YYYY MM DD hh mm ss.
Column 7 indicates the decimal value of pressure in sample chamber 1.
Column 8 indicates the decimal value of pressure in sample chamber 2.
Column 9 indicates the decimal value of temperature in the sample chamber.
Column 10 indicates the decimal value of the power supply reading.
Column 11 indicates the decimal value of the filament reading.
Column 12 indicates the decimal value of the electron current reading.
Daily data growth from a single satelliteAbout 3MB