负信噪比直扩信号侦察技术研究综述

Review of Some Recent Progress in the Techniques for the Interception of DSSS Signals with Negative SNR

负信噪比直扩信号已经在军事通信、GPS导航定位、敌我识别等领域获得了广泛的应用，对抗这种技术的侦察手段目前还没有取得实用化的进展，因而，需要开展大量的理论和实践工作来弥补这一急需的技术空缺。本文对负信噪比直扩信号侦察技术的研究现状进行了回顾，探讨了其中的一些关键问题和新技术途径。

In contrast with the fact of the successful application of direct sequence spreading spectrum (DSSS) signals in a wide variety of areas such as military communication,GPS navigation,IFF signals,and etc, there still remain unsolved on the countermeasures for such kind signals that can be available in the development of engineering systems.Thus a large amount of theoretical and practical work should be done to fill the urging demand.The research developments on this issue are reviewed first.Then important problems are summarized and several promising approaches for solving such problems are proposed in this paper.