电子学报2017，Vol.45Issue(4)：820-825,6.DOI:10.3969/j.issn.0372-2112
跳频信号的时差直接定位
TDOA-Based Direct Geolocation of Frequency-Hopping Signals
欧阳鑫信 1万群 2曹景敏 1熊瑾煜1
作者信息
- 1. 电子科技大学电子工程学院,四川成都 611731
- 2. 盲信号处理重点实验室,四川成都 610041
- 折叠
摘要
Abstract
Two direct TDOA geolocation approaches are proposed for FH(Frequency-Hopping) signals-the maximum likelihood direct geolocation and the maximum correlation-sum direct geolocation.The first approach makes use of the sparsity of FH signals in frequency domain,and constructs CCF(cross correlation function) matrix in frequency domain,the location estimate is obtained by searching the max eigenvalue of CCF in a two dimensional grid.The second approach directly uses the sum of CCF,and searches in a two dimensional gird to find the location estimate.The comparison between them has been made,and the first approach performs better than the second one,but needs much more computation.Monte Carlo simulations validate that the accuracy of the proposed maximum likelihood direct geolocation method is the best,and the maximum correlation-sum direct geolocation method also outperforms the two-step method.关键词
跳频/时差/直接定位Key words
frequency-hopping/TDOA/direct geolocation分类
信息技术与安全科学引用本文复制引用
欧阳鑫信,万群,曹景敏,熊瑾煜..跳频信号的时差直接定位[J].电子学报,2017,45(4):820-825,6.
