基于PCI的宽带雷达信号源设计

Design of Wideband Radar Signal Source Based on PCI

信号产生技术是雷达研究中的一个重要部分。传统信号源在联调时一般是固定几组参数,通过外部选择实现多参数、多波形的输出,存在波形参数修改不便的缺点,本文介绍了一种基于PCI总线通用宽带雷达信号源的设计和实现方法,采用了专用的PCI接口芯片和F PGA结合,实现了接口芯片与DDS的时序控制逻辑,可直接产生单频、线性调频等多种信号;同时还介绍了WDM驱动程序和上层控制软件的编写。该信号源具有即插即用、软件灵活修改波形参数、通用性强的优点。

Waveform generation technology plays an important part in the radar research.During the debugging signals,the traditional signal sources are adopted fixing a few parameters and implemented outputting multi-parameters and multi-waveforms,which have some shortcoming of parameters modified.This paper presents the design and realization of wideband radar signal source based on PCI.The FPGA and PCI chips are used in the system.The wide Linear Frequency Modulated (LFM) signals are generated with the realization of the time control logic of PCI chip and DDS.At the same time,WDM driver and application program are presented.The system has advantages of PNP,flexible parameter modified and good application.