基于调频连续波的地基干涉合成孔径雷达微形变监测实验平台  

GB-InSAR micro-deformation monitoring experimental platform based on FMCW

作　　者：车俐[1] 蒋留兵[1] CHE Li;JIANG Liubing(School of Information and Communication,Guilin University of Electronic Science and Technology,Guilin 541004,China)

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《实验技术与管理》2023年第5期148-153,共6页Experimental Technology and Management

基　　金：广西创新驱动发展专项(桂科AA21077008);广西无线宽带通信与信号处理重点实验室主任基金项目(GXKL06220102,GXKL06220108);广西高等教育本科教学改革工程项目(2022JGB196);桂林电子科技大学研究生教育创新计划项目(2022YXW07,2022YCXS080);桂林电子科技大学学位与研究生教育改革项目(2022YXW07);桂林电子科技大学校级教育教学改革项目(JGS202139,JGS202043)。

摘　　要：地基干涉合成孔径雷达具有测量精度高、测量距离远、全天候等特点,适用于大坝、桥梁的微形变监测。该文搭建了基于调频连续波的干涉合成孔径雷达系统实验平台,通过干涉测量原理构建模型分析回波信号,改进成像及形变监测算法,提高系统监测能力。搭建滑坡位移形变模型,验证系统设计和形变测量方法,实验测量结果与实际移动值相差0.11 mm,误差在规定范围内,满足系统性能要求。GB-InSAR(ground-based interferometric synthetic aperture radar)has the characteristics of high measurement accuracy,long measurement distance and all-weather,which is suitable for micro-deformation monitoring of dams and bridges.An experimental platform of interferometric synthetic aperture radar system based on FMCW(frequency modulated continuous wave)is built in this paper,a model for analyzing the echo signal using the interference principle is constructed,and the imaging and deformation monitoring algorithms is improved to enhance the monitoring capability of the system.A landslide displacement deformation model was built to verify the system design and deformation measurement method.The difference between the experimental measurement result and the actual movement value is 0.11 mm,and the error is within the specified range,which meets the system performance requirements.

关 键 词：合成孔径雷达 干涉 微形变监测 

分 类 号：TN95[电子电信—信号与信息处理]