Research On Jamming System Of Pulse Compression Radar And Jamming Effect Evaluation

In modern electronic warfare, pulse-compression radar become more and more popular, because of its good detection performance and strong anti-jamming ability for radar, which would pose a great threat to target that is exposed within the range of the radar. Therefore, it has important theoretical significance and practical value for the study of radar jamming technique and jamming effectiveness. It will be the key points of this paper on pulse-compression Radar jamming technique and jamming effectiveness evaluation. This paper is based on MATLAB simulation, the simulation is built for pulse-compression radar and then applying a jamming to it. Finally, a complete radar jamming system is build and the jamming effectiveness evaluation will be accessed by it.This thesis mainly talks about pulse-compression Radar jamming technique and jamming effectiveness based on modern electronic warfare condition. Firstly, this paper introduces the basic knowledge of pulse-compression radar, and also introduces the study of time-frequency characteristic, pulse-compression and side lobe suppression of chirp signal. Then we talk about the suppress jamming and deception jamming mainly. In the suppress jamming, we study RF noise jamming, noise AM jamming, noise FM jamming, noise PM jamming and noise convolution jamming. We also discuss the generation of various kinds of jamming signals and make a simulation analysis. On the other hand, in deception jamming, we study on distance deception jamming and velocity deception jamming. The focuses of this paper is on the model and simulation of radar jamming system, including the simulation of radar targets, radar echo system with noise and clutter, pulse compression radar systems, jamming systems and other systems. A detailed analysis of the modeling and simulation of processes and the program flow of subsystems is carried out based on the theory and combined by system block diagram and simulation results. Then the whole system of pulse compression radar jamming is combined by various subsystems. Parameter setting interface and design of radar interference parameter setting interface are implemented so that the simulation results of working conditions and radar jamming can be observed under different parameters. Finally, a better pulse compression radar jamming system is simulated based on the theoretical basis of pulse compression radar and radar-jamming technology. A deep study of jamming effectiveness evaluation criteria and assessment methods is also made and then we evaluate the effective of pulse compression radar jamming. Respectively applied to pulse compression jamming and deceive jamming to pulse compression radar and obtain the simulation results by analysis of the effectiveness of jamming according to different evaluation criteria. For compression jamming, the jamming effectiveness of pulse compression radar is evaluated by contrast the simulation results under different Signal-to-Interference Ratio. For deceive jamming, the jamming effectiveness of pulse compression radar is evaluated based on the detection of the target such as probability, assessing the accuracy and resolution, which is analyzed under a different number of false targets.