Analysis of the Influence of Noise in Reference Signal on the Performance of Non-Cooperative Passive Detection

In non-cooperative passive detection systems, reference signals are inevitably interfered by noise and will affect the detection performance of the system. This paper carries out in-depth analysis and research on this issue. First, the digital radio mondiale signal is used as the radiation source, the signal model and ambiguity function performance of digital radio mondiale signal are analyzed. Then, the influence of noise on the detection performance of the system is analyzed by theoretical modeling and formula deduction, based on the model of reference signal and surveillance signal. Finally, the simulation results verify the relevant conclusions of the theoretical derivation.