中俄联合火星电离层星-星掩星探测  

Joint Russian-Chinese Satellite-to-satellite Martian Radio Occultation Experiment

作　　者：孙越强[1] 杜起飞[1] 朱光武[1] 吴季[1] 陶鹏[1] 白伟华[1] 赵华[1] 胡雄[1] 吴小成[1] 郑建华[1] A S Kosov T K Breus V M Gotlib A M Krymskii A V Zakharov 

机构地区：[1]中国科学院空间科学与应用研究中心,北京100190 [2]Space Research Institute,Russian Academy of Sciences

出　　处：《空间科学学报》2009年第5期475-479,共5页Chinese Journal of Space Science

基　　金：国家重大项目资助

摘　　要：中俄联合火星星-星掩星探测是人类首次在火星空间环境进行此类的联合试验。用于探测火星电离层的星-星掩星技术较以前星地间的探测技术相比,有可接收高信噪比信号,反演精度高,可探测火星上太阳天顶角大于43°,或者小于138°的区域电离层等优点。本文介绍了中俄联合火星星-星掩星探测方案、基本原理,给出了主要技术指标、地面模拟测试结果。Joint Russian-Chinese satellite-to-satellite Martian radio occultation experiment will be used to sound Martian ionosphere to derive electron density profiles. Compared with satellite-to- Earth radio occultation technique, satellite-to-satellite radio occultation technique has the better ability to receive higher signal-to-noise ratio radio signal and acquire more accurate profiles in a wider range （especially in areas of solar zenith angle of less than 43° and angle of larger than 138°）. Joint Russian-Chinese satellite-to-satellite Martian radio occultation experiment is based on measurement of frequency shift between two radio signals penetrated the Martian ionosphere. The two coherent signals are irradiated from the transmitters. The frequencies of the signals are near 416.5 MHz and 833 MHz. The transmitters will be installed on Russian spacecraft Phobos-Grunt （FGSC） and the receivers will be installed on Chinese satellite YH-1. The relative frequency shift between two signals will reflect the property of Martian ionosphere.

关 键 词：星-星掩星 火星 电离层 YH-1探测器 Phobos—Grunt探测器 

分 类 号：P352[天文地球—空间物理学]