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叙述了1990年中国返回式卫星采用的微重力测量系统概况、微重力测量数据的处理方法、微重力测量结果与分折。指出:这是国内首次空间微重力水平监测;研制的JS05-1A 微重力测量仪动态精度优于4μg,响应时间6ms,达到了国际同类仪器的先进水平;该仪器为指导优化空间晶体生长的微重力环境及了解卫星工作状况提供了有力手段。通过对该卫星微重力水平监测所获得的73505对数据进行分折,发现有效载荷动作是影响卫星微重力水平的主要因素,为10~(-4)g 量级;有效载荷不动作时,除1.23%的时间存在10~(-4)g量级不明干扰外,有97.6%的时间微重力的绝对值小于4×10~(-5)g,仅O.3%的时间在10~(-4)g 量级。
Describes the overview of microgravity measurement system adopted by Chinese returning satellites in 1990, the processing method of microgravity measurement data, microgravity measurement results and subdivision. It is pointed out that this is the first time monitoring the level of microgravity in China. The dynamic precision of JS05-1A microgravity measuring instrument developed is better than 4μg and the response time is 6ms, which has reached the advanced level of similar international instruments. Gravity environment and understand the working conditions of the satellite provides a powerful tool. Based on the 73505 data obtained from monitoring the microgravity level of the satellite, it is found that the payload movement is the major factor affecting the microgravity level of the satellite, which is 10 ~ (-4) g. When the payload is not moving, 1.23% of the time there is 10 ~ (-4) g unidentified interference, 97.6% of the time microgravity absolute value of less than 4 × 10 ~ (-5) g, only 0.3% of the time in the 10 ~ ( -4) g order of magnitude.