The high-sensitivity reconnaissance system,due to its high reconnaissance sensitivity,introduces false frequencies within its operating bandwidth when high-power signals appear in the reconnaissance environment.In integrated equipment,the system itself generates high-power signals,causing unintentional interference to reconnaissance and introducing false frequencies.When the frequency of the high-power signal is out of band,a wide open receiver is used to de-tect the high-power signal,and the detected pulses are introduced into a narrowband high-sensi-tivity system.In the narrowband receiver,the frequency of the high-power signal is written as a reference frequency into the pulse descriptor parameters generated by the narrowband receiver by comparing the timing relationship of the pulses.When the frequency of the high-power signal is within the band,the timing relationship of the pulses generated within the band is directly com-pared for reference frequency marking.For pulse descriptors with reference frequencies,a statis-tical based pulse train false frequency suppression method is used to filter out false frequencies at the signal level,which can effectively suppress the problem of false frequencies faced by high-sensitivity reconnaissance in integrated equipment.
关键词
高灵敏度侦察/谐波虚假/交调互调虚假/虚假频率抑制
Key words
high sensitivity reconnaissance/harmonic false frequency/intermodulation false fre-quency/false frequency suppression
维普
万方数据