利用CHAMP卫星星历恢复引力位模型的模拟研究
Simulation of Recovering Gravitational Potential Model from the Ephemeredes of CHAMP
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摘要: 对CHAMP卫星星历恢复引力位模型的精度,使用3种方法和不同积分弧长作了模拟计算,结果表明,采用正则化方法并扩展积分弧长将有助于提高解算位系数的精度,预期CHAMP卫星观测将使现有引力位模型低阶位系数的精度提高1~2个数量级Abstract: Three methods with different arc length of integration are tested in this simulation to recover gravitational potential model from the ephemoeredes of CHAMP.The results show that the regularzed method with suitable arc length of integration will improve the precision of recovering gravitational potential model.The precision of low degree harmonic coefficients from CHAMPobservations is expected 1~2 magnitude better than any current gravitational potential model.
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