用于灾情成像的FMCW SAR系统参数设计  

Parameter design of FMCW SAR system applied to disaster imaging

作　　者：李光瑜[1] 曲毅[1] 张箭 

机构地区：[1]武警工程大学信息工程系,陕西西安710086

出　　处：《现代电子技术》2015年第23期1-5,共5页Modern Electronics Technique

基　　金：国家自然科学基金青年科学基金资助项目

摘　　要：调频连续波(FMCW)合成孔径雷达(SAR)的成像系统具有体积小、功耗低、全天候工作、灵活派遣、起降场地要求低等优点,适合应用于小区域的灾情评估。结合成像分辨率、场景宽度和数据存储率的性能指标,提出了FMCW SAR系统总体参数设计流程,对参数分解设计,详细讨论了馈通信号的滤除、数据存储速率和发射功率的设计问题。最后根据局部灾情评估的场景特点,给出了参数设计实例和仿真结果。The imaging system of the frequency modulated continuous wave （FMCW） synthetic aperture radar （SAR） has the advantages of small size, low power dissipation, all-weather operation, flexible dispatch, and low requirement of the take-off and landing site, which is suitable for applying to disaster evaluation of small region. Based on the performance indexes of ima- ging resolution, scene width and data storage rate, the design process of the population parameter in FMCW SAR system is pro- posed. The design problems of the feed-through signal filtering, data storage rate and transmitted power are discussed in detail by decomposition design of the parameters. According to the scene characteristics of the partial disaster evaluation, the instance of parameter design and simulation results are provided.

关 键 词：FMCW SAR 灾情评估 参数设计 馈通信号 

分 类 号：TN95-34[电子电信—信号与信息处理]