一种LFMCW雷达高度表信号处理系统的实现  

Implementation of an LFMCW Radar Altimeter Signal Processing System

作　　者：时秋红[1] 罗丰[1] 刘刚[1] 张林让[1] 

机构地区：[1]西安电子科技大学,西安710071

出　　处：《火控雷达技术》2008年第2期85-88,共4页Fire Control Radar Technology

摘　　要：文中介绍一种LFMCW雷达高度表信号处理系统的设计与实现,给出基于Altera公司的Cyclone II系列和ADI公司TS101芯片的信号处理硬件整体结构,分析整个系统的模块流程。同时提出在高度表中采用Chirp_Z算法提高精度,并对FFT和Chirp_Z算法工程实现作出了描述,通过仿真证明采用FFT、Chirp_Z算法能够实现高度高分辨的优越性,并最终在实验系统中验证了系统设计的有效性。The design and implementation of an LFMCW radar altimeter signal processing system is in troduced. The hardware integrated structure of the signal processing system based on the Altera＇s Cyclon Ⅱ series and the ADI＇s TS101 chip is given out and the module flow of the integrated system is analyzed. At same time, adoption of Chirp Z algorithm in radar altimeter is proposed to improve the accuracy. Im plementation of FFT and Chirp_Z algorithm in engineering is described. The simulation result proves tha superiority of using FFT and Chirp Z algorithm in altimeter high resolution can be realized. The validity o this system is verified in the experimental system.

关 键 词：LFMCW雷达高度表 信号处理系统 FFT Chirp_Z算法 

分 类 号：TN911.7[电子电信—通信与信息系统] TN95[电子电信—信息与通信工程]