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作 者:周伟莉 宋淑丽[2] 胡雄[1] 姜君 ZHOU Wei-li;SONG Shu-li;HU Xiong;JIANG Jun(National Space Science Center,Chinese Academy of Sciences,Beijing 100190,China;Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China;University of Chinese Academy of Sciences,Beijing 100049,China)
机构地区:[1]中国科学院国家空间科学中心,北京100190 [2]中国科学院上海天文台,上海200030 [3]中国科学院大学,北京100049
出 处:《天文学进展》2023年第3期347-367,共21页Progress In Astronomy
基 金:国家自然科学基金(12203090,41730109)。
摘 要:深空探测中探测器轨道主要采用地面跟踪站进行测量,无线电信号在探测器与地面跟踪站间传输时会受到地球传播介质误差的影响。传播介质误差主要包括地球的中性大气时延误差和电离层时延误差等。针对传播介质误差修正在深空探测中的应用需求,调研了国内外地基测量数据传播介质误差研究进展,重点阐述了深空探测中VLBI地基测量数据中性大气和电离层时延产生的机理和修正方法。针对关键技术及未来发展趋势进行了分析,以提高传播介质误差修正精度及时效性。In deep space exploration,the spacecraft trajectory is mainly measured by the ground tracking stations.The radio signals transmission between spacecraft and stations will be affected by the earth’s propagation medium error,which contains neutral atmospheric delay and ionospheric delay,et al.According to the application requirements of propagation delay calibration in deep space exploration,we investigate the ground station observations’propagation delay at home and abroad,and focus on the basic principles and calibrated methods of VLBI observations’neutral atmosphere and ionosphere.The development trend of the key technologies in the future are analyzed,to improve the accuracy and timeliness of the propagation delay calibration.This paper can provide a reference for propagation delay calibration for trajectory determination of the spacecraft.
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