Abstract
Abstract. The features of the landslide geological disaster are wide distribution, variety, high frequency, high intensity, destructive and so on. It has become a natural disaster with harmful and wide range of influence. The technology of ground-based synthetic aperture radar is a novel deformation monitoring technology developed in recent years. The features of the technology are large monitoring area, high accuracy, long distance without contact and so on. In this paper, fast ground-based synthetic aperture radar (Fast-GBSAR) based on frequency modulated continuous wave (FMCW) system is used to collect the data of Ma Liuzui landslide in Chongqing. The device can reduce the atmospheric errors caused by rapidly changing environment. The landslide deformation can be monitored in severe weather conditions (for example, fog) by Fast-GBSAR with acquisition speed up to 5 seconds per time. The data of Ma Liuzui landslide in Chongqing are analyzed in this paper. The result verifies that the device can monitor landslide deformation under severe weather conditions.
Highlights
The ground-based synthetic aperture radar (GB-Synthetic Aperture Radar (SAR)) is a novel deformation monitoring technology developed in recent years
This Fast-GBSAR is the first fully polarized ground based synthetic aperture radar (GB-SAR) in the world based on the advanced frequency modulated continuous wave (FMCW) technology
3.1.1 Signal Model: The synthetic aperture radar with FMCW signal model is analysed in details (Meta et al, 2003), and the zero intermediate frequency signal is obtained by mixing the echo signal directly with the replica of the transmitted signal
Summary
The ground-based synthetic aperture radar (GB-SAR) is a novel deformation monitoring technology developed in recent years. The pulse SAR needs to transmit high-energy pulse in a very short time period, with the disadvantages being such as large size, high power consumption, high cost and heavy weight. These disadvantages limit the use of GB-SAR in civilian areas such as emergency rescue and disaster relief. Fast-GBSAR is used to collect the data of the landslide This Fast-GBSAR combines the FMCW, SAR and interference technologies to monitor high-precision, real-time, large area terrain micro-deformation. The experimental results of Ma Liuzui landslide in Chongqing are analysed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
