大型桥梁、高层建筑物结构健康监测的核心是利用传感测量技术获取监测数据，运用健康监测评估理论实现结构健康的准确评价，而微波干涉雷达是实现结构变形与振动参数测量的有效途径。常规微波干涉雷达采用实孔径、单站测量方式进行结构监测，仅能实现一维距离分辨下的视线向变形和振动参数测量，在干扰信号抑制、空间分辨能力和测量维度方面无法满足结构监测需求。针对以上问题，本项目提出基于MIMO雷达和多角度联合测量原理的微波干涉雷达微弱变形与振动参数多维测量技术思路，重点研究解决复杂背景下干扰信号抑制与振动部位检测、MIMO雷达微变形与振动参数测量、雷达多角度联合观测与数据融合技术和雷达数据在复杂结构体三维几何模型的匹配定位等关键问题，实现结构变形与振动参数的时、空、频域等多维测量，为结构健康监测提供新的监测技术与方法。

The core of health monitoring of large bridges and high-rise buildings is to use sensory measurement technology to obtain monitoring data, and to use health evaluation theory to achieve accurate evaluation of structural health. Microwave interference radar is an effective technology to achieve structure deformation and vibration parameter measurement. Conventional microwave interferometric radar uses real aperture and single-station measurement for structural monitoring. It can only achieve deformation and vibration parameter measurement in the line-of-sight direction under one-dimensional range resolution. It can not meet the structural monitoring requirements in terms of interference signal suppression, spatial resolution and measurement dimension. In order to solve the above problems, this project proposes a multi-dimensional measurement technique for weak deformation and vibration parameters of microwave interference radar based on MIMO radar and multi-angle joint measurement principle. The project will study the following key issues including interference signal suppression and vibration part detection under complex background, micro-deformation and vibration parameter measurement of MIMO radar, multi-angle joint observation and data fusion technology, matching and mapping of radar data in 3D Geometric model of complex structures. Through the above work, multi-dimensional measurement of structural deformation and vibration parameters in time, space and frequency domain will be implemented and new monitoring techniques and methods will be provided.