Fast algorithm of TDOA and FDOA estimation for radar signals in LEO dual-satellite location

被引：2

作者：

Yang, Yu-Xiang ^{[1
]}

Xia, Chang-Xiong ^{[1
]}

Chen, Jing ^{[1
]}

Xiong, Jin-Yu ^{[1
]}

机构：

[1] Science and Technology on Blind Signal Processing Laboratory, Southwest Electronics and Telecommunication Technology Research Institute, Chengdu

来源：

Dianzi Keji Daxue Xuebao/Journal of the University of Electronic Science and Technology of China | 2015年 / 44卷 / 03期

关键词：

FDOA; LEO dual-satellite; Passive location; Radar signal; TDOA;

D O I：

10.3969/j.issn.1001-0548.2015.03.002

中图分类号：

学科分类号：

摘要：

Cross ambiguity function (CAF) in the joint estimation of time difference of arrival (TDOA) and frequency difference of arrival (FDOA) is limited by large computation load, sampling rate and data size. To solve these problems, a fast algorithm of TDOA and FDOA estimation based on the characteristics of radar signal in the situation of LEO dual-satellite passive location is proposed, which first estimates the TDOA by prolonging the signals periodically and only computes the main zone of the correlation function, then estimates the FDOA by Fourier transform of the mixed signal only with the internal signal of pulses, and finally interpolates in time domain and frequency domain effectively. The simulation results show that the proposed algorithm not only decreases the computation load but also guarantees the high estimation accuracy. ©, 2015, Univ. of Electronic Science and Technology of China. All right reserved.

引用

页码：326 / 332

页数：6

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