GRAPeS sofware for processing ibis radar data

涉及自然过程和地貌的工程和科学研究项目需要精确测量位移。这些测量传统上是使用测量设备和摄影进行的，通常是从空中进行的。商业机载卫星技术使地貌测绘发生了革命性的变化，但对于以大学为基础的研究来说，成本高昂。地面雷达干涉测量是一种新技术，它允许以低于毫米的精度远程监测大部分移动。这种探测微小位移的灵敏度是由于测量从每个点反射的雷达波的相位差(干涉法)。每一次亚毫米的位移都会引起雷达可以探测到的反射波的相位差。

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 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.