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地基合成孔径雷达(GB-SAR)是一种新型的建筑变形监测技术,相较于传统的监测手段,该方法拥有高精度,覆盖面大等优点。基于FMCW技术的Fast-GBSAR系统采用调频连续波技术,相较于国内已有的基于步进连续波技术的类似系统,该系统处理速度提高30倍,并拥有更高的可靠性。Fast-GBSAR在国内已对多座大桥进行了公开测试,监测结果表明Fast-GBSAR测量精度能达到0.01 mm,在变形监测领域极具潜力。
The foundation synthetic aperture radar (GB-SAR) is a new type of building deformation monitoring technology. Compared with the traditional monitoring methods, this method has the advantages of high precision and large coverage. The Fast-GBSAR system based on FMCW technology adopts the FM continuous wave technology. Compared with the existing similar system based on the step continuous wave technology in China, the system increases the processing speed by 30 times and has higher reliability. Fast-GBSAR has carried out public tests on several bridges in China. The monitoring results show that Fast-GBSAR can achieve a precision of 0.01 mm and has great potential in deformation monitoring.