I. Introduction
Electronic warfare play an essential role in strategic offense and defense in modern warfare. Electronic interference can cause the electronic equipment and systems of enemies to lose or reduce the effectiveness of radio wave disturbance measures, which are an integral part of electronic countermeasures[1]. Electronic interference directly restricts the role of radio detection systems. This article takes the multi-sine frequency modulation detection system as an example[2]. The deceptive and suppressive interference on the system is studied through theoretical analysis and modeling simulation. First, this article establish a signal processing model to analyze the working principle of the multi-sine frequency modulation detection system. Then the corresponding interference model was established to analyze the Influence of Interference Suppression and Deceptive Interference on Multi-Sine Frequency Modulation Detection System [3]. According to the signal processing process of the system, the output of the system under suppressive interference and deceptive interference affecting the interference effect are analyzed, and the theoretical analysis is verified by simulation experiments. In summary, the high-power noise signal covering the receiver can effectively suppress the useful signal and invalidate the proximity part of the detection system. Sinusoidal amplitude modulation scanning interference have obvious deceptive effects.