为解决崩岸地形监测中水陆地形分别测绘及水陆地形三维监测系统时空配准技术难题,提出利用GNSS(Global Navigation Satellite System)与INS(Inertial Navigation System)组合导航系统后处理的紧耦合数据,进行崩岸水陆地形三维监测数据时间匹配、空间归算。经误差分析,GNSS与INS紧耦合导航定位精度均<2 cm,经实例数据精度评定,陆域测点三维分量的误差<10 cm,水域测点测深的误差<15 cm,满足崩岸监测精度要求。基于GNSS/INS紧耦合水陆地形三维一体化崩岸监测系统可获得精准、高效、安全的崩岸监测数据,可广泛用于通航河段崩岸监测,为崩岸监测提供新的技术方案。

In order to solve the technical problem of space-time registration of ship-borne multi-sensor land-water three-dimensional monitoring system and separate surveying and mapping of land-water topography in landslide monitoring, we propose to use the tight-coupled data post-processed by GNSS(Global Navigation Satellite System) and INS(Inertial Navigation System) integrated navigation system to match time and calculate space of land-water three-dimensional monitoring data in landslide monitoring. Accurate, efficient and safe acquisition of monitoring data of bank collapse is realized. Error analysis demonstrates that the positioning accuracy of GNSS and INS integrated navigation is better than 2 cm. Test data show that the median error of land survey points is better than 10 cm, and that of water survey points is better than 15 cm, which meets the requirement of bank collapse monitoring accuracy. The 3D integrative bank collapse monitoring system with tightly coupled GNSS and INS can be extensively applied to bank collapse monitoring in navigation segment and provides new technical programme as it can obtain precise, highly efficient, and safe monitoring data.