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针对雷达与扩频通信系统的电磁兼容问题,提出一种基于时域符号级的雷达干扰分析方法.首先详细分析了雷达对扩频通信系统电磁辐射干扰的机理,推导得出扩频通信系统在脉冲雷达干扰下的误码率公式和曲线;然后利用建立的雷达电磁干扰仿真模型,对扩频通信系统采用不同扩频因子以及不同频率隔离度时的受扰性能进行了仿真分析,验证了理论分析结果的合理性;最后利用所提方法计算给出了微波频段5种典型雷达与扩频通信系统的频率-距离隔离关系.研究结果表明:该方法对于在更深层次上揭示雷达辐射干扰的本质,提高频谱利用效率具有重要意义.
Aiming at the problem of electromagnetic compatibility between radar and spread spectrum communication system, a method of radar interference analysis based on time-domain symbol level is proposed.Firstly, the mechanism of radar’s interference to electromagnetic radiation of spread spectrum communication system is analyzed in detail, Then the error rate formula and curve under the interference of pulse radar are obtained. Then by using the established simulation model of electromagnetic interference of radar, the simulation results of the jamming performance of spread spectrum communication system with different spreading factor and different frequency isolation are validated, Finally, the frequency-distance isolation relationship of five typical radars and spread-spectrum communication systems in the microwave frequency band is given by using the proposed method.The results show that this method can reveal the essence of radar radiated interference at a deeper level , To improve the efficiency of spectrum utilization is of great significance.