Ground-based interferometric synthetic aperature radar for landform movement detection

用于地形运动检测的地基干涉合成孔径雷达

• 批准号: 376269-2009
• 负责人: Martin, Derek
• 金额: $ 10.8万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=412336
• 关键词: Ground; based; interferometric; synthetic; aperature

Engineering and science research programs that involve natural processes and landforms require accurate measurement of displacements. These measurements are traditionally made using survey equipment and photography, and are often carried out from the air. Commercial air-borne satellite technology has revolutionized landform mapping but is cost prohibitive for university-based research. Ground-based Radar Interferometry is a new technology that allows the remote monitoring of movements of large portions of territory (landslides, slopes, volcanoes, glaciers etc.) and of structures (dams, bridges, towers, buildings) with sub-millimetre accuracy. This sensitivity in detecting small displacements is due to measuring the phase differences of the radar waves (interferometry) reflected from each point. Each sub-millimetre displacement gives rise to a phase difference of the reflected wave, detectable by radar.

涉及自然过程和地形的工程和科学研究项目需要精确测量位移。这些测量通常是使用测量设备和摄影进行的，并且通常是从空中进行的。商业机载卫星技术已经彻底改变了地形测绘，但对于基于大学的研究来说，成本过高。地面雷达干涉测量是一项新技术，可以远程监测大部分领土（山体滑坡，斜坡，火山，冰川等）和结构（水坝，桥梁，塔楼，建筑物）的运动，精度达到亚毫米。这种检测小位移的灵敏度是由于测量从每个点反射的雷达波（干涉测量）的相位差。每一亚毫米的位移都会引起反射波的相位差，雷达可以探测到。