【摘要】 本文介绍利用精密水准测量沉降量对InSAR动态监测成果进行精度验证的技术流程,通过PS点沉降量、沉降等值线和沉降曲面等成果的精度对比分析,精密水准点与COSMO影像获取PS点的沉降量之差算术平均值为-0.26mm,与ENVISAT影像获取的沉降量之差算术平均值为-6.36mm,两者精度都达到毫米级,验证了InSAR地面监测成果的可靠性;研究表明InSAR数据分辨率高,准确反映的地面沉降分布和变化趋势,为地面灾害监测提供了重要的数据参考。更多还原

【Abstract】 This paper introduces the technical procedure of precision verification of InSAR dynamic monitoring results by using precision leveling settlement,and compares and analyzes the accuracy of PS points settlement,settlement isoline and settlement surface.The arithmetic mean value of the settlement difference between the precision leveling point and the PS point acquired by COSMO image is -0.26 mm,and the arithmetic average value of the settlement difference between the precision leveling point and the settlement obtained by ENVISAT image is -6.36 mm.The precision of both are up to millimeter level,which verifies the reliability of the ground monitoring results of InSAR.The research shows that the InSAR data has high resolution,accurately reflect the distribution and change trend of land subsidence,and provide important data reference for ground disaster monitoring.更多还原