Discussion On Urban Surface Subsidence Monitoring Technology Innovation
Yang Ming;Yang Zhaoxiang;Ningbo Institute Of Surveying And Mapping Design;Forest Designing And Research Institute Of Heilongjiang Province;
With the development of In SAR technology,its inherent limitations,such as temporal and spatial decoherence,atmospheric phase delay and other defects gradually appear. In order to overcome the above shortcomings,scholars have successively proposed new techniques,such as permanent scatterers,differential interferometry( PS-In SAR),small baseline difference interferometry( SBAS),coherent target( CT) and other sequential In SAR.The surface subsidence is a geological disaster caused by various factors,the surface elevation reduces slowly,permanent irreparable environmental and resource loss,the damage has two main characteristics: one is the slow,obviously difficult to detect; two is the case of the settlement,even eliminate the occurrence factors of settlement,ground settlement it is impossible to completely recover. Therefore,strengthening the research on the theory and technology of urban land subsidence monitoring is of great significance to the survival and development of human beings.
【CateGory Index】： P642.26