信号侦察中的跳频信号识别方法

为了解决跳频设备已经大量装备而对跳频信号的侦察识别仍然困难的问题,作者提出了两种跳频信号识别方法,包括最大相关处理法和时间相关统计法.在对跳带内的信号进行数字信道化处理后,再经过最大相关处理,时-频图上的跳频信号的分布情况将会变得非常清晰;时间相关统计法是充分利用跳频信号在时间上的断续性和每跳间的连续性来识别跳频信号.经过实验验证,上述两种识别方法的使用,在跳频信号的侦察识别上效果非常明显.

Recognition Method for Frequency Hopping in Signal Reconnaissance

In order to solve the problem that the devices of frequency hopping (FH), although equipped largely, have difficulty recognizing and reconnoiting FH signals, the author puts forward two recognition methods for FH signals: the most correlation process and time correlation statistics. After the signals in the hopping range pass through the process of numeric channel and then the process of the most correlation, the distribution of the FH signals in the time-frequency picture becomes very clear. In the method of time correlation statistics, full use is made of the break-continue characteristic of FH signals over time and the continuum between each hop of the FH signal to recognize FH signals. Experiments show that the two recognition methods are quite effective for the reconnaissance and recognition of FH signals.