空载脉冲多普勒跟踪雷达数字信号处理机的设计和实现

DESIGN AND REALIZATION OF AIRBORNE PD TRACKING RADAR SIGNAL PROCESSOR

分析了准连续波三通道雷达接收机的特点 ,提出了一种先进的雷达数字信号处理机的实现方案。该方案采用了中频采样、高速 DSP和并行体系结构等先进技术。在系统实现层次上 ,分析了一些中频采样实现方法的局限 ,进而提出了适合准连续波雷达回波特点的采样滤波器的设计方法和采样频率选择公式。在硬件设计上 ,本系统采用了 3 2位浮点 DSP—— ADSP2 1 0

The features of a paracontinual wave three channels radar receiver are analysed and an advanced scheme of digital signal processing system is proposed. Some of the advanced techniques are applied in it. These are intermediate frequency sampling technique,very high speed DSP and its parallel architechture. To realize the design, the limit of some existing intermediate frequency sampling methods is analyzed, and a new intermediate frequency sampling filter is proposed, which is very suitable to the paracontinual wave radar receiver. As to the hardware, ADSP21060, the advanced 32 bit float point DSP and its parallel architecure are used in the system. The processor has been proved working well in practice.