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介绍了一种高分辨率雷达信号 (脉间CostasFH信号 )和直接数字合成 (DDS)技术 .给出了脉间CostasFH信号与步进频率脉冲雷达信号的统一表达形式 ,以及用“频率挑选矩阵”从DDS所产生的信号集合中产生脉间跳频信号的方法 .使用该种方法 ,可以增加雷达系统软硬件实现的灵活性
A high resolution radar signal (inter-pulse CostasFH signal) and direct digital synthesis (DDS) technique are introduced.The uniform expressions of inter-pulse CostasFH signal and step-frequency pulse radar signal are given, and the “frequency selection matrix” Method of generating inter-frequency hopping signal from the signal set generated by DDS, which can increase the flexibility of realizing the hardware and software of the radar system