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  • Gender:

    Male

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    Employed

  • School/Department:

    Collaborative Innovation Center of Geospatial Technology

  • Date of Birth:

    1983-10-08

  • Education Level:

    With Certificate of Graduation for Doctorate Study

  • Alma Mater:

    Wuhan University

  • Status:

    Employed

  • School/Department:

    Collaborative Innovation Center of Geospatial Technology

  • Date of Employment:

    2014-04-01

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Paper Publications

Current position: Home > Scientific Research > Paper Publications

Technological progress of Wuhan-1 high precision intelligent remote sensing satellite

  • Time:2025-09-16
  • Hits:

  • Journal:

    National Remote Sensing Bulletin

  • Key Words:

    high precision and high resolution satellite; the Wuhan-1 satellite; the plane positioning accuracy without ground control points; intelligent image processing in orbit; high precision attitude determination

  • Abstract:

    The number of high-precision and high-resolution remote sensing satellites in China is relatively small, which is not yet able to meet the rapid development needs of China’s geographic information industry and other fields. Wuhan-1 satellite aims to solve the core technology problem of high-precision positioning without control points with cost-effective optical remote sensing small satellites to promote the development of spatial information industry. The satellite is a multi-functional intelligent remote sensing satellite integrating 0.5-meter resolution panchromatic imaging, 2-meter resolution multispectral imaging, 10-meter resolution hyperspectral imaging and 0.35—meter resolution video imaging. It has a variety of mission modes, such as single-band multi-target imaging, same-orbit stereo imaging, multi-band splicing imaging, active push-scan imaging, surface-array video gaze imaging and imaging of celestial targets. Focusing on the problem of high-precision positioning without control point, Wuhan-1 satellite has carried out a lot of analysis and design from the design of high-stability optical axis pointing of high-resolution camera, high-stability design of star-ground camera angle, ultra-high-precision satellite attitude measurement, and rapid calibration of high-resolution camera to the sky, and so on. Through the force-heat integration design and high-precision thermal control of the satellite platform and the high-resolution camera, the high stability of the angle of the satellite star-ground camera is realized. On this basis, the expected index of no-control-point plane accuracy better than 5 m was realized through ultra-high-precision satellite attitude measurement. The satellite is also equipped with a high-performance GPU, and the remote sensing data of the satellite can be processed by intelligent image processing algorithms in the GPU. The satellite is equipped with 1.8Gbps high-speed star-ground digital transmission equipment, the satellite can be imaged while real-time digital transmission to the ground or after the data back to the transmission. The satellite is designed with a single-turn energy-balanced power supply subsystem to support a 10-minute imaging or data transmission mission per turn. Since its launch on May 21, 2024, it has completed the tests of various working modes of the satellite, and the planar accuracy of the satellite without control point is better than 5 meters, and the geometric accuracy of the satellite with control point is better than 1 meter. It has broken through the key technologies of satellite star-earth camera angle design and ultra-high-precision satellite attitude measurement, and verified the feasibility of realizing the high-accuracy and high-resolution remote sensing satellites with cost-effective small satellites, which provides a reference for the same type of satellites in China.

  • Co-author:

    曾国强，龚健雅，黄頔，高玉东，孙恒青，左玉弟，李志军，戴荣凡，邵远征

  • Indexed by:

    Journal paper

  • Discipline:

    Engineering

  • Document Type:

    J

  • Volume:

    29

  • Issue:

    6

  • Page Number:

    1451-1461

  • Translation or Not:

    no

  • Date of Publication:

    2025-07-01

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