Analysis of Positioning Accuracy of Dual-Satellites Passive Location Algorithm Aided Digital Map

Abstract

Abstract: The positioning method based on WGS-84 ellipsoid model using dual-satellite TDOA/FDOA measurements was discussed,and the positioning error caused by target zero-height assumption was analyzed.The results show that if the target'S height is more than 1 km,digital map should be used tO improve accuracy.The positioning precision using digital map was analyzed by many simulation results.The research shows that this method is reasonable.At last,the influence of digital map's height accuracy was analyzed.

Key words: Dual-satellites, Passive location, Heigh assumption, Digital map, Accuracy, analysis

Xu Ang Fan Shiwei Zhang Yong (Beijing Tracking&Communication Technical Institute,Beijing 100094). Analysis of Positioning Accuracy of Dual-Satellites Passive Location Algorithm Aided Digital Map[J]. Chinese Space Science and Technology.

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https://zgkjkxjs.magtechjournal.com/EN/Y2009/V29/I02/53

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Analysis of Positioning Accuracy of Dual-Satellites Passive Location Algorithm Aided Digital Map

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