SPECULAR POINT CALCULATION BASED ON MODIFIED GRADIENT DESCENT ALGORITHM

被引：0
|
作者：
Tian, Yusen [1 ,2 ]
Wang, Xianyi [1 ,2 ]
Sun, Yueqiang [1 ,2 ]
Wang, Dongwei [1 ,2 ]
Wu, Chunjun [1 ,2 ]
Bai, Weihua [1 ,2 ]
Xia, Junming [1 ,2 ]
Du, Qifei [1 ,2 ]
机构：
[1] Chinese Acad Sci, NSSC, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
IGARSS 2018 - 2018 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM | 2018年
基金：
中国国家自然科学基金;
关键词：
GNSS-R; specular point calculation; modified gradient descent algorithm;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Global Navigation Satellite System-Reflectometry (GNSS-R) becomes a popular remote-sensing technique for its wide coverage and low cost. GNSS-R works as a bi-static radar receiving weak signals of GNSS satellites reflected from the surface of the Earth. In order to obtain high quality observations, the reflected signals need to be tracked by the open-loop. So the key to the GNSS-R instrument is the calculation of specular point. In this paper, a modified gradient descent algorithm is applied to predict the position of specular point. And an experiment is carried out to test the performance of the algorithm. It turns out that the algorithm has valid results and high real-time performance.
引用
收藏
页码：1047 / 1050
页数：4
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