纯引力轨道验证质量辐射计效应分析

刘红卫; 王兆魁; 张育林

doi:10.3879/j.issn.1000-0887.2012.05.004

纯引力轨道验证质量辐射计效应分析

doi: 10.3879/j.issn.1000-0887.2012.05.004

国防科技大学航天与材料工程学院, 长沙 410073;

基金项目: 国家自然科学基金资助项目（11002076)；国防预研资助项目(51320010201)

详细信息

通讯作者:
刘红卫(1986—),男,河北邢台人,博士生(联系人.Tel:+86-10-62794316; E-mail:liuhw05@163.com).

中图分类号: V448
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出版历程
- 收稿日期: 2011-04-13
- 修回日期: 2012-01-27
- 刊出日期: 2012-05-15

Analysis of Radiometer Effect on the Proof Mass in Purely Gravitational Orbit

¹Institute of Aerospace and Material Engineering,National University of Defense Technology, Changsha 410073, P.R.China;²School of Aerospace, Tsinghua University, Beijing 100084, P.R.China

摘要

摘要: 纯引力轨道飞行器在精密导航、重力场测量以及基础科学研究等方面具有重要意义，辐射计效应是纯引力轨道验证质量的重要干扰力之一．针对内编队重力场测量系统，利用解析和数值计算相结合的方法，分析了内卫星辐射计效应与内编队系统参数的关系，并给出了适宜于工程计算的内卫星辐射计效应近似函数及其修正因子．分析可知，内卫星辐射计效应与腔体平均压力成正比，与腔体平均温度成反比；随腔体温差的增加而增加，随外卫星腔体半径的增加存在极小值，并且取极小值时外卫星腔体半径和内卫星半径比为常数1.189 4，这一常数是由内外卫星的球形腔体构型决定的，与腔体内温度和压力无关．当内外卫星半径比大于10时，可认为外卫星腔体充分大，此时内卫星辐射计效应与内卫星半径的平方近似成正比，随外卫星腔体半径的变化可忽略．
- 纯引力轨道 /
- 验证质量 /
- 内编队 /
- 辐射计效应 /
- 腔体半径
Abstract: Spacecrafts with the pure gravity environment were of great significance in precision navigation, gravity field measurement for celestial bodies and basic physics experiments. Radiometer effect was one of the important interfering factors on proof mass in the purely gravitational orbit. For gravity field measurement system based on inner-formation flying, the relationship between radiometer effect on the inner-satellite and system parameters was studied by using analytical and numerical methods, and an approximate function of radiometer effect suitable for engineering computation and its correction factor were obtained. Analytic results show that radiometer effect on the inner-satellite is proportional to the average pressure but inversely proportional to the average temperature in the outersatellite cavity. The radiometer effect increases with the increase of temperature difference in the cavity and its minimum exists with the increase of the cavity radius. When the minimum of radiometer effect arrives, the ratio of the cavity radius and the inner-satellite radius is a constant 1.189 4. This constant is determined by the spherical cavity configuration and independent of the temperature and pressure distribution. When the ratio of the cavity radius and the inner-satellite radius is more than 10, it is believed that the cavity is large enough and radiometer effect is approximately proportional to the square of the inner-satellite radius and the change of radiometer effect with the outersatellite cavity radius can be ignored.
- purely gravitational orbit /
- proof mass /
- inner-formation flying system /
- radiometer effect /
- cavity radius

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参考文献(11)

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