Monitoring Crustal Deformations with Radar Interferometry： A Review

The crustal movements, probably motivating earthquakes, are considered as one of the main geodynamic sources. The quantitative measurements of ground surface deformations are vital for studying mechanisms of the buried faults or even estimating earthquake potential. A new space-geodetic technology, synthetic aperture radar interferometry (InSAR), can be applied to detect such large-area deformations, and has demonstrated some prominent advantages. This paper reviews the capacity and limitations of InSAR, and summarises the existing applications including some of our results in studying the earthquake-related crustal motions.Finally it gives the outlook for the future development of InSAR.     

基于GNSS的铁路勘测设计数字化采集系统设计

本文结合铁路勘测设计实际需求,提出基于GNSS的铁路勘测设计数字化采集系统,包括中线测量、断面测量、水文测量、单点测量、既有线测量等。并从系统框架设计、功能设计等方面进行了详细阐述。系统利用移动设备、北斗导航、移动计算、CORS系统、GNSS RTK等技术资源,实现CAD地形图实时导航引导外业测量工作,满足铁路勘测设计工作要求,通过对移动设备功能进行精简和完善,确保系统贴合铁路勘测设计实际需求。