Abstract:

In view of the problem of false signals such as cross-channel split signals and rabbit ear effect when using channelization to process signals, this study proposes a method for eliminating false signals by using the parameter characteristics of the false signals. According to the serious time-frequency overlap of the cross-channel split signals of adjacent channels in the method, the cross-channel split signals of the channelization detection result are spliced and fused. According to the parameters such as the amplitude and pulse width of the false pulse of the rabbit ear effect, which are much smaller than the amplitude and pulse width of the original signal, and the occurrence and end times are near the rising and falling edges of the original signal, the rabbit ear pulses of the channelization detection result are directly eliminated. The final detection result is obtained through the above processing. Experimental results show that the method proposed in this study can effectively eliminate false signals and obtain correct detection results after processing the channelized output.

Key words: channelization, false signals, cross-channel, rabbit ear effect, linear frequency modulation, wideband signals, electronic reconnaissance, signal detection