电讯技术2017，Vol.57Issue(4)：425-429,5.DOI:10.3969/j.issn.1001-893x.2017.04.010
微弱信号多站时差协同检测技术
Multi-station TDOA-based Collaborative Detection of Weak Signals
于佳序 1孙正波 1贺青 1欧阳鑫信1
作者信息
- 1. 盲信号处理重点实验室,成都 610041
- 折叠
摘要
Abstract
To solve the problem that the traditional approaches fail to detect the weak signal and also improve the performance of detection,a multi-station time difference of arrival(TDOA) collaborative detection approach is proposed for weak signals.The correlation results of all the stations are cumulated in the space domain.The test statistic is obtained by searching the maximum in a two dimensional grid.The probability distribution of test statistic is implemented and the test statistic obeys the extremum I type distribution.The threshold is obtained by the Neyman-Pearson rule.Monte Carlo simulations validate that the processing gain of the approach is 10lgK dB(K is the number of TDOA station group) higher than that of the traditional detector in the same condition.关键词
无源定位/微弱信号检测/相关检测/协同检测/时差Key words
passive location/weak signal detection/correlation detection/collaborative detection/time difference of arrival分类
信息技术与安全科学引用本文复制引用
于佳序,孙正波,贺青,欧阳鑫信..微弱信号多站时差协同检测技术[J].电讯技术,2017,57(4):425-429,5.
