一种极化雷达校准信号源的设计与实现

摘要

In order to calibrate the reception channel of polarizing radar,a polarizing radar calibration signal source system is designed and implemented based on DDS software programming technology. The main hardware circuit and software design scheme is provided. FPGA is combined with DDS technology,and the DDS module is improved by software programming inside FPGA. The resources superiority and high speed operation capability of FPGA as large-scale chip are fully utilized. This system can produce high precise and stable arbitrary radar calibration signal,and can satisfy the requirement of the polarizing radar calibration application.%为了校准极化雷达的接收通道，设计并实现了一种基于DDS软件编程技术的极化雷达校准信号源系统。给出了主要的硬件电路和软件设计方案。该系统将FPGA技术与DDS技术结合，在FPGA内部软件编程实现改进的DDS模块，充分利用了FPGA作为大规模芯片的资源优势和高速运算能力。系统能够产生高精度且稳定的任意雷达校准信号，可满足极化雷达标校的应用。