作为全人类罕见和无法替代的财富，文化遗产在历史记录与文明传承中至关重要。因自然灾害频发与人类活动加剧，文化遗产可持续发展正面临挑战。本项目拟利用星载合成孔径雷达（SAR）干涉能力，以遗产本体结构不稳定性以及赋存场景大范围异常形变监测为突破口，选择南京明城墙和宁夏明长城等大遗址为典型示范，研究文化遗产异常形变监测与评估的双尺度星载多基线雷达干涉模型与方法，即：1)集成PS和DS，增强测量点空间分布密度，降低相位重构计算复杂度，开发适用于自然场景的文化遗产异常形变监测MT-InSAR方法；2）克服叠掩效应，集成PSInSAR和层析SAR优势，赠别形变贡献当量，研究遗产本体结构不稳定性监测与诊断的D-TomoSAR方法。接着利用异常形变指标，研究文化遗产风险评估规范原型。项目成果将有效填补雷达遥感在文化遗产保护应用中的理论空白，并助力“一带一路”遗产的可持续化发展。

Well-known for its outstanding significant and universal value that is rare and irreplaceable, cultural heritage places an important role for the history documentation and civilization inheriting. At present, the sustainability of cultural heritage is facing challenges negatively impacted by the combination of natural hazards and anthropogenic activities. In this project, we focus on the defect of relics linked to the structural instability as well as the motion anomaly of the surrounding landscape. Two representative heritage sites, including Ming Dynastry City Walls (Nanjing) and Ming Great Wall (Ningxia), were selected. Taking advantage of the interferometric capability of synthetic aperture radar (SAR), a two-scale multi-temporal SAR interferometry (MT-InSAR) solution will be developed for the motion detection and preventive evaluation of cultural heritage by applying satellite SAR data. That is, a MT-InSAR adapted in natural scenarios will be firstly exploited for the motion anomaly detection and its consequence evaluation for cultural heritages owing to the integration of PS and DS points (enhanced spatial density of point candidates) and the reduction of the computation complexity. Second, a D-TomoSAR approach, powerful in solving the layover effect and isolating displacement contributions, will be developed for the structural instability and risk diagnosis of heritages by integrating the merits of PSInSAR and SAR tomography. After that, a prototype of regulations will be exploited for the risk assessment and mapping. The deliverables of this project will fill the theoretic vacancy of radar remote sensing in heritage conservation, which is also beneficial for the sustainable development of heritage sites along the One Belt and One Road.