带实时频谱监测的高频雷达系统设计

Design of HF radar system with noise spectrum monitoring

高频雷达复杂的电磁环境决定了频谱监测工作的必要性。由于雷达干扰具有随机性和突发性,因此提出实时频谱监测具有重大意义,从高频海洋表面波雷达研究着手,设计了一种具有实时频谱监测功能的雷达接收机系统,该系统能够灵活地对雷达工作时序进行控制,利用雷达的工作时间间隙对雷达的外部噪声环境进行监测和统计,以便选择合适的雷达工作频率,避开较强的外界干扰和噪声,提高雷达的抗干扰性能。

It is necessary to take use of noise spectrum monitoring in HF radar system for the complicated electromagnetic environment. Because of the randomicity and paroxysm of the interference outside, the real-time noise spectrum monitoring become much more important. A newly designed HF radar system with noise spectrum monitoring is presented. The schedule of the work tempo is changed to accommodate the noise acquiring. The time gap of each sweep period is used to acquire noise and noise analysis is finished. According to the statistical results, the radar system will select a relative pure frequency, in this way the capability of anti-interference is greatly improved.