地球信息科学学报 ›› 2011, Vol. 13 ›› Issue (4): 562-570.doi: 10.3724/SP.J.1047.2011.00562

• 遥感技术与应用 • 上一篇    下一篇

广东省滑坡灾害监测中CORS系统的应用分析

魏平新1, 李成钢2, 徐峰3, 石晓春2   

  1. 1. 广东省地质环境监测总站,广州 510510;
    2. 广东省国土资源厅测绘院,广州 510500;
    3. 广州中海达卫星导航技术股份有限公司,广州 511400
  • 收稿日期:2011-03-25 修回日期:2011-07-25 出版日期:2011-08-25 发布日期:2011-08-23
  • 作者简介:魏平新(1974-),男,工程师,主要从事水工环地质研究与地质灾害监测预警工作。E-mail:gdjcwei@126.com
  • 基金资助:

    国家自然科学基金项目"基于网络计算和中央差分的广域分布式网络GNSS/RTK研究"(40771173);广东省科技计划项目"广东省突发事件应急卫星定位与低空遥感技术研究"。

Study on Slope Slide Real-Time Monitoring System in Guangdong Using GPS/CORS Integration Technique

WEI Pingxin1, LI Chenggang2, XU Feng3, SHI Xiaochun2   

  1. 1. Institute of Geo-Environment Monitoring of Guangdong Province, Guangzhou 510510, China;
    2. Institute of Surveying & Mapping, Department of Land & Resources of Guangdong Province, Guangzhou 510500, China;
    3. Guangzhou Hi-target Navigation Tech Co., Ltd., Guangzhou 511400, China
  • Received:2011-03-25 Revised:2011-07-25 Online:2011-08-25 Published:2011-08-23

摘要: 在广东省滑坡灾害动态监测工作中,以广东省GPS连续运行参考站网络(GDCORS)技术为核心,集成单频GPS接收机及一机多天线技术(GMS)等低成本专业化GPS 形变监测手段,开展高精度(厘米级到毫米级)滑坡灾害动态监测应用研究。在对3种关键技术,包括:CORS系统建立和维护区域动态位移形变监测基准、GPS/CORS动态解算数学模型、监测目标形变运动状态参数的自动探测与提取技术的原理和算法模型进行详细论述的基础上,进行了较为完备的系统设计与技术集成。最后,在省内通过实验区和地质灾害隐患点开展的一系列高精度(毫米级)滑坡地表形变远程动态监测的实验与应用(包括模拟试验、野外试验、示范点监测等),验证了该技术在广东省滑坡灾害动态监测预警中的适用性。

关键词: 全球定位系统, 地质灾害, 连续运行卫星定位服务系统(GDCORS), 形变监测, 一机多天线(GMS)

Abstract: The main objective of this study was the application of CORS and single-frequency GPS system for continuous deformation monitoring on natural events, especially for geological disasters and development of a large-scale region monitoring system within Guangdong Province. In this paper, a near-real-time slope slide monitoring technique was presented, which is applied in Guangdong Province. The method and algorithm to achieve centimeter-level (even mm-level) deformation monitoring was discussed in detail. The system was integrated with low-cost devices including both the single-frequency GPS receiver and the GPS multi-antenna System(GMS), based on the Guang-Dong Continuously Operating Reference Stations (GDCORS). After the coordinates reference system was formed by GDCORS system, the displacement of surface deformation in geological disasters were monitored by GPS/CORS integration algorism with mm accuracy level. It is pivotal to detect the distinct geological disaster-related displacement deformation evidence automatically and extract the temporal and spatial characteristics in the whole process of the deformation, which includes the following four steps: outlier detection, adaptive threshold classification, deformation evaluation and deformation parameters auto-detection. The hypothesis and test, threshold classification tools were used, based on Kalman filter analysis, to realize uniform deformation parameters auto-detection applicable to multi-scale accuracy demand from decimeter to millimeter level.Experimental data from both GDCORS based geological disaster monitoring simulation and the the slope at Si-hui high School were used to evaluate the performance of the technique. It showed that 2 mm accuracy for 40.7km distance for deformation monitoring was reached. It is pivotal to provide a potential and applicable reference to monitor geological hazard continuously with high spatial and temporal resolution, especially at a largescale,e.g. the whole provincial region.

Key words: Guang Dong Continuously Operating Reference Stations (GDCORS), deformation monitoring, GPS multi-antenna System (GMS), Global Positioning System (GPS), geological disaster