Page 83 - 《真空与低温》2025年第4期
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真空与低温 第 31 卷 第 4 期
498 Vacuum and Cryogenics 2025 年 7 月
GEO-SAR 卫 星 表 面 材 料 光 压 力 高 精 度 地 面 测 量 技 术 研 究
贺 玮 1,2 ，张庆君 ，邵明学 3,4 ，王振兴 2
2*
（1. 国防科技大学电子科学学院，长沙 410073；2. 航天五院遥感卫星总体部，北京 100094；
3. 中国科学院电工研究所，北京 100084；4. 中国科学院国家天文台，北京 100101）
摘要：GEO-SAR 卫星在轨光压力精确建模需要航天器表面的光压响应特性数据，而航天器表面的光压响应
与材料、工艺、表面状态等有关，采用实验室地面测量结果能够有效辅助修正建模参数，提高定轨精度。本文介
绍了一种高灵敏度、高精度、宽量程、抗扰振等特点的 GEO-SAR 卫星表面材料光压力地面专用测量系统，突破了
重力解耦、二级减振、光斩波调制等关键技术，实现了严重扰动环境下的微小力信号检测及航天器表面材料的模
拟光压测量。
关键词：GEO-SAR 卫星；光压响应；地面测量系统
中图分类号：TB71；V443 文献标志码：A 文章编号：1006−7086（2025）04−0498−06
DOI：10.12446/j.issn.1006-7086.2025.04.011
Research on High-precision Ground Measurement Technology of Solar Radiation Pressure
on the Surface Materials of GEO-SAR Satellites
3,4
1,2
2*
HE Wei ，ZHANG Qingjun ，SHAO Mingxue ，WANG Zhenxing 2
（1. College of Electronic Science and Technology，National University of Defense
Technology，Changsha 410073，China；2. Institute of Remote Sensing Satellite，CAST，Beijing 100094，China；
3. Institute of Electrical Engineering，Chinese Academy of Sciences，Beijing 100084，China；
4. National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100101，China）
Abstract： Geosynchronous synthetic aperture radar （GEO-SAR） satellite is a type of microwave imaging satellite，
which operates in the Geosynchronous Orbit with an altitude of 36,000 km. Its orbit determination accuracy and orbit predic-
tion accuracy are important factors affecting the imaging positioning accuracy and image quality. Due to the orbital height
characteristics of the geostationary orbit，the solar pressure received by the satellite in orbit is the largest force among non-
conservative perturbation forces received by the satellite，which will significantly affect the orbit determination accuracy and
orbit prediction accuracy of the satellite，and then affect the imaging positioning accuracy and imaging quality of the satellite.
Measurement of solar pressure response characteristics of spacecraft surface materials is helpful to accurately model the opti-
cal pressure of GEO-SAR satellite in orbit and improve the accuracy of satellite orbit determination. The solar pressure re-
sponse of the spacecraft surface is related to the material，process，surface state and so on. Ground-based laboratory measure-
ment results can effectively validate and refine the modeling parameters and improve the accuracy of orbit determination. In
this paper，a special measurement system for optical pressure of GEO-SAR satellite surface material on the ground is devel-
oped，which has the characteristics of high sensitivity，high precision，wide range，resistance to interference and vibration.
The test piece is measured in the vacuum environment chamber. The system is composed of five parts：micro force measure-
ment system，vertical pendulum and its steering system，vibration suppression system，force calibration system，data acquisi-
tion and processing system. It breaks through the key technologies such as gravity decoupling，secondary vibration reduction，
optical chopper modulation，and realizes the measurement of micro force signal and simulated optical pressure of spacecraft
surface materials in disturbed environment. The designed system can meet the requirements of high-precision measurement of
收稿日期：2025−03−14
基金项目：国家重点研发计划项目（2021YFC2202801）
作者简介：贺玮，高级工程师。E-mail：hewei501_cast@163.com
通信作者：张庆君，博士，研究员。E-mail：ztzhangqj@163.com
