Ground-Based SAR Moving Target Refocusing Based on Relative Speed for Monitoring Mine Slopes

Ground-based synthetic aperture radar (GBSAR) has the advantage of retrieving submillimeter deformation mine slope by using differential interferometry technique, which is important for safe production in mining applications. However, moving vehicle’s defocus/displaced signal will mask SAR image area affects accuracy interference phase extraction and inversion. In order to remove its influence, target can first be refocused then removed. To our knowledge, there no GBSAR refocusing method currently. Hence, necessary. solve above problem, this paper proposes a single-channel FMCW-GBSAR based on relative speed. Firstly, model analyzed, speed deduced. Based GBSAR’s feature incomplete aperture, Range Doppler (RD) algorithm adopted improved achieve parameters. The controlled squint angle; thus, obtained via searching 2D proposed verified data, are generated combining NCUT FMCW real data simulated echo.