一种基于VPX架构的多通道雷达回波模拟器设计

A Multi-channel Radar Echo Simulator Based on VPX Architecture

摘要:

针对数字阵列雷达中频处理系统功能性能测试需求,设计了一种基于VPX架构的多通道雷达回波模拟器。该模拟器采用高性能数字信号处理器与现场可编程门电路,通过多片数模转换芯片产生128路复杂回波模拟信号,能够实现目标轨迹模拟、目标距离延时模拟、多普勒频移模拟、转发式干扰信号模拟等功能。系统硬件平台符合VPX 标准,扩展性和通用性较强。

Abstract:

In order to meet the functiona performance test requrements of digital arrayradar intermediate frequency processing system,a multi-channel radarsimulator based orVPX architecture is designed,The simulator is designed with digital signal processor(DSP)and field programmable gate array(FPGA). 128 channels of complex echo analog signals arefinally generated through multiple digital to analog conversion chips. It can realize thefunctions of target trajectory simulation, target distance delay simulation, Doppler frequencyshift simulation, forwarding interference signal simulation and so on. The system hardwareplatform conforms to VPX standard with strong expansibility and versatility.