Weak target detection algorithm for non-cooperative bistatic radar

At present, most of the passive radar system researches utilize FM radios, TV broadcasts, navigation satellites etc. as illuminators. The transmitted signals are not specifically designed radar waveforms. In this work, a frequency agile, phased array Air Surveillance Radar (ASR) is used as illuminator of opportunity for weak target detection. In this case, coherent integration methods are not applicable. Thus, a parametric non-coherent integration algorithm based on task de-interweaving is proposed. Numerical experiments verify that this method is effective in weak target detection.