脉间Costas FH高分辨毫米波雷达信号的DDS实现

IMPLEMENTATION OF INTER-PULSES COSTAS FH HIGH RESOLUTION MMW RADAR SIGNAL USING DDS TECHNOLOGY

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 。

A kind of high resolution radar signal (inter pulses Costas freguency hopping,or Costas FH) and a kind of direct digital synthesis (DDS) technique were introduced.A uniform expression of inter pulses Costas FH radar signal and stepped frequency pulsed radar signal was presented. A method to generate Costas FH radar signal from the signal set produced by DDS using so called 'frequency selecting matrix'was also presented. The result shows that by using this method, certain flexibility of implementation of radar system, including software and hardware, may be increased.