A ground-based radar glacier flow rate high-precision monitoring method and system
A ground-based radar, high-precision technology, applied to radio wave measurement systems, mapping and navigation, measurement devices, etc. problems, to achieve the effect of enhancing applicability and reducing work intensity
Active Publication Date: 2022-04-01
SOUTHWEST JIAOTONG UNIV +1
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[0005] Aiming at the problems in the prior art that glacier surface deployment and control are difficult, global high-precision conversion is difficult to control, and glacier surface monitoring target points are difficult to accurately track and identify, the present invention provides a ground-based radar glacier flow rate high-precision monitoring method and system, the purpose of which is to overcome: It is difficult to track and identify monitoring target points in the complex scattering environment of glacier surface, realize the precise measurement of coordinates and dynamic extraction of thematic information of glacier flow velocity
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Embodiment 1
[0036] A ground-based radar glacier flow rate high-precision monitoring method, comprising the following steps:
[0037] Step S1: Combining the UAV aerial survey data and the layout data of ground-based radar monitoring sites, establish a conversion model from the GB-SAR two-dimensional coordinate system to the three-dimensional coordinate system, and realize the unification of the framework of the GB-SAR line-of-sight monitoring system and the target three-dimensional system ;
[0038]Step S2: High-precision geocoding of GB-SAR monitoring data based on solution space search and matching method to realize accurate measurement of coordinates of monitoring target points;
[0039] Step S3: Based on the dynamic extraction of glacier flow velocity information based on GB-SAR high-precision monitoring data, the tracking and identification of monitoring target points in the glacier surface object scattering environment is completed.
[0040] The concrete steps of described step S1 a...
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The invention discloses a ground-based radar glacier flow rate high-precision monitoring method and system, which solves the problems of difficult to control the global high-precision conversion and difficult to distinguish control points in the traditional concept technology. The method includes: step S1: joint aerial survey of UAV Based on the layout data of ground-based radar monitoring stations, a conversion model from the GB-SAR two-dimensional coordinate system to the three-dimensional local coordinate system is established to realize the framework unification of the GB-SAR line-of-sight monitoring system and the target three-dimensional system; Step S2: search and match method based on the solution space The high-precision geocoding of the GB‑SAR monitoring data realizes the precise determination of the coordinates of the monitoring target points; Step S3: Based on the GB‑SAR high-precision monitoring data, the dynamic extraction of the topic of glacier flow velocity information completes the tracking of the monitoring target points in the glacier ground object scattering environment The identification realizes the technical effect of precise determination of coordinates and dynamic extraction of thematic information on glacier flow velocity.
Description
technical field [0001] The invention belongs to the technical field of ground-based radar coding, and in particular relates to a method and system for high-precision monitoring of glacier flow velocity by ground-based radar. Background technique [0002] Dynamic monitoring of glacier flow rate can effectively reflect the dynamic evolution law of glaciers, and reveal the degradation status of glaciers accordingly. It is one of the important measures for glacier resource utilization, climate change risk control and related disaster early warning. highly valued. At present, the technical approach for dynamic monitoring of glacier flow velocity is mainly based on the interpretation and analysis of optical remote sensing images, which is difficult to accurately quantify the glacier sports field, and is severely restricted by climatic conditions. Especially in the cloudy and foggy areas in southeast Tibet, optical remote sensing data is scarce. Ground-based radar (GB-SAR) has ou...
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IPC IPC(8): G01S13/86G01S13/58G01S13/66G01C13/00
CPCG01S13/86G01S13/58G01S13/66G01C13/00
Inventor 刘国祥谢毅徐正宣张瑞张广泽王栋王科蔡嘉伦贾洪果王晓文
Owner SOUTHWEST JIAOTONG UNIV