摘要
利用InSAR与GPS融合技术,开展研究高速公路采空区影响的变形监测与评价.针对D-InSAR条带变形信息的稀疏相位解缠问题,提出了一种在GPS中常用的LAMBDA相位解缠算法,建立了合适的解算模型,获取了采空区高速公路D-InSAR条带变形时间序列,掌握了采空区影响发展情况.在InSAR雷达卫星过境的同时,利用三等水准测量进行变形量测,对比验证表明,用InSAR与GPS融合技术进行高速公路变形监测是可行的.进行的基于InSAR与GPS技术的公路采空区变形监测科研成果可靠,具有广泛的应用前景.
Integrating InSAR with GPS data,how to monitor and evaluate the influence of goaf on expressway was investigated.To unwrap the sparse phases in the deformation information on expressway as extracted from D-InSAR bands,LAMBDA phase unwrapping algorithm commonly used in GPS is proposed with an appropriate resolving model developed to acquire the deformation time-series for the expressway with goaf from D-InSAR bands so as to keep abreast of new development of the influence of goaf on expressway.While the radar satellite is in transit,the 3rd class leveling is used to measure the deformation to verify the monitoring feasibility of expressway deformation.The experimental results showed that the expressway/goaf deformation monitoring via integrating InSAR with GPS is feasible and reliable and has broad prospects in applications.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第12期1773-1776,共4页
Journal of Northeastern University(Natural Science)
基金
国家高技术研究发展计划项目(2006AA12Z156)
