Abstract

The possibility of compensating the atmospheric influence on precision measurement of gravitational ‘‘redshift’’ using the Earth orbiting satellites is discussed. For a communication radio signal propagating from a ground-based tracking station to a spacecraft and back, the interaction with the ionosphere and the troposphere produces a undesirable contribution to the total frequency shift which must be removed by specific data processing. In the paper we present a brief overview of atmospheric hindrances with estimation of their magnitudes. Then, the algorithms for filtering the gravitational effects against the atmospheric noise background are considered. The efficiency of such filtering is illustrated using the example of gravitational measurements with Spectr-R satellite in the RadioAstron mission.

中文翻译：

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使用卫星车载时钟测量重力红移时的大气障碍补偿

摘要

讨论了使用地球轨道卫星补偿大气对重力“红移”精度测量的影响的可能性。对于从地面跟踪站向航天器往返传播的通信无线电信号，与电离层和对流层的相互作用会对总频移产生不良影响，必须通过特定的数据处理将其消除。在本文中，我们对大气障碍进行了简要概述，并估算了其大小。然后，考虑了针对大气噪声背景过滤重力影响的算法。在RadioAstron任务中使用Spectr-R卫星进行重力测量的示例说明了这种滤波的效率。