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地面雷达静态微变形测量环境影响改正方法研究 被引量:8

Environment correction methods of static micro-deformation surveyed by Ground-based radar
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摘要 为了保证测量精度,研究了地基微波干涉测量雷达(ground-based radar,GB-radar)静态微变形监测时受到的环境影响的有效改正方法,采用GB-radar和游标卡尺对特制的角反射器产生的模拟变形同步观测.在稳定环境下,对比试验表明GB-radar静态测量精度优于0.1 mm.野外环境下监测结果表明,径向距离60 m时,数小时内静态观测所受到的环境影响可达0.5 mm,必须仔细进行处理.采用两种方法对环境影响进行改正,一种是将测定到的大气参数代入微波大气传播改正公式中,以获得改正量;另一种是通过观测视场中稳定目标物所受环境影响量,换算出变形体的改正量.结果表明,两种方法均可有效改正环境影响,改正后的变形值测量精度在0.15mm左右,对两种环境改正方法的优缺点和影响因素进行了分析. To ensure the accuracy, the environment's impact of ground-based radar in static micro- deformation monitoring should be corrected effectively. A series of simulated deformation were pro-
出处 《东南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2013年第A02期428-432,共5页 Journal of Southeast University:Natural Science Edition
基金 国家自然科学基金项目重点资助项目(U1134206) 中国路桥工程有限责任公司资助项目(8521000568)
关键词 地基雷达 微波干涉测量 变形监测 环境改正 ground-based radar microwave interferometry survey deformation monitoring envi-ronmental correction
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共引文献53

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