Effect Of High-power Microwave On Guide Radar Tracking Performance

Precision guidance technology can effectively destroy the enemy’s machines and speed up the process of war in the future high-tech warfare. High-power microwave weapon(HPMW) is one of the important means to resist the precision guided weapons. It can cause physical damage to electronic devices in homing head by high power microwave radiation, which makes the missile accuracy decreased, even lossed function of detection, guidance and control.This paper studied the effect of HPM on angular accuracy in step frequency(SF), linear FM(LFM) pulse compression and monopulse estimation radar system. Then studied measurement of damage effect, the model of the damage effect and it’s hypothesis testing. The main research works as follows:1. Firstly, radar precision puidance technology was summarized. Confrontation between HPMW and precision-guided weapons was discussed. Last analysed and summarized research and development about HPMW and it’s damage effect at home and abroad.2. After analysed signal and information processing, each mathematical model about signal model and signal processing have been established. The HPM will effect performance of signal and information processing on amplitude sum and difference monopulse angle measurement and target tracking systems. This potential impact was qualitative analyzed.3. The model of distortion signal in sum and difference channels about HPM effect on SF-LFM pulse compression radar has been established. Then through Monte Carlo experiments, qualitative and quantitative relationship about phase noise and amplitude noise intensity and correlation and the decline of angular accuracy caused by HPM were built.4. In the measurement experiments about HPM effect on SF-LFM pulse compression monopulse angle measurement radar, survey of amplitude and phase noise in sum and difference channels and the basic methods of parameter estimation and hypothesis testing model were put forward. The correctness of measurement, parameter estimation and hypothesis testing model was proved by simulation.The innovations of this paper involved: (1)With SF-LFM pulse compression radar monopulse estimation system, signal distortion model of sum and difference channels has been built in the HPM damage effect on radar receiver. Qualitative and quantitative relationship about phase noise and amplitude noise intensity and correlation and the decline of angular accuracy caused by HPM were built by Monte Carlo experiments.(2)Measurement of zero-intermediate frequency, parameter estimation and model hypothesis testing were put forward about amplitude and phase noise in sum and difference channels.