【作者】 舒逢春； 平劲松； 郑为民； 钱志瀚；

【Author】 SHU Feng-chun,PING Jing-song,ZHENG Wei-min,QIAN Zhi-han (Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China)

【机构】 中国科学院上海天文台；

【摘要】 为了实现对深空探测器的高精度轨道测量,在无线电测距测速技术之外,基于甚长基线干涉测量(VLBI)技术发展了相对差分单向测距(△DOR)技术。与常规VLBI信号相关处理方法不同,针对深空探测器发射的DOR信号频谱特征,可采用本地相关处理方法提取DOR信号。本文研究了本地相关处理技术的数学模型,作为开展深空探测器DOR观测实验的参考。更多还原

【Abstract】 Besides radiometric Doppler and ranging technique,ΔDOR(Delta Differentail One-way Ranging) technique has been developed based on VLBI technique in order to tracking the deep space probes with very high accuarcy.By taking advantage of the spectral characteristic of DOR tones emitted from deep space probes,local correlation technique has been developed to extract DOR tones,which is differed from conventional VLBI data correlation methods.In this paper the principle and mathematic model of the local correlation technique are described in detail,as a reference for DOR experiments for tracking deep space probes.更多还原