Radar coherence prediction method and device

A prediction method and coherence technology, applied in measuring devices, radio wave measurement systems, image data processing, etc., can solve problems such as increased production costs and inability to obtain coherence, so as to reduce monitoring costs, save InSAR data costs, and improve efficiency effect

Pending Publication Date: 2021-07-09
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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Problems solved by technology

On the one hand, this requires a large amount of data to be pre-booked, which greatly increases the production cost
On the other hand, there are currently no archived radar images for many areas, so coherence cannot be obtained through InSAR processing

Method used

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  • Radar coherence prediction method and device
  • Radar coherence prediction method and device
  • Radar coherence prediction method and device

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Embodiment Construction

[0040] For better understanding and implementation, the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] see figure 1 , an embodiment of the present invention provides a radar coherence prediction method, including the following steps:

[0042] S1. Preprocessing the radar coherence data and NDVI data.

[0043] In the embodiment of this application, the radar coherence data is obtained by downloading radar images and calculating by ISCE software, and the NDVI data is obtained from the Resource and Environmental Science Data Center of the Chinese Academy of Sciences (http: / / www.resdc.cn) . Among them, the radar coherence refers to the interference coherence of the radar image. The radar transmits microwaves to the target area, and then receives the echo reflected by the target to obtain the synthetic aperture radar (SAR) complex image pair imaging the same target area. If the complex image pair There is a coherent con...

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Abstract

The invention relates to a radar coherence prediction method and device, and the method comprises the steps of carrying out the preprocessing of radar coherence data and NDVI data, carrying out the resampling of the preprocessed radar coherence data and NDVI data, and building a prediction model of a quantitative relation between the resampled radar coherence data and NDVI data; obtaining the input NDVI data of the to-be-detected region, and predicting the radar coherence of the to-be-detected region according to the prediction model and the NDVI data of the to-be-detected region. According to the invention, the radar coherence of the to-be-detected region can be directly predicted according to the existing global NDVI data, the InSAR data cost is saved, the efficiency is improved, and the GPS monitoring cost is reduced.

Description

technical field [0001] The invention relates to the technical field of synthetic aperture radar interference, in particular to a radar coherence prediction method and device. Background technique [0002] Interferometric Synthetic Aperture Radar (InSAR) is a high-resolution, high-precision geodetic technique. Over the past few decades, it has been successfully applied to measure many geophysical phenomena, including earthquakes, volcanoes and other geological activities. For capturing large areas of surface deformation, InSAR usually works well in areas of good coherence. [0003] However, at present, it is generally necessary to process a large number of radar interferograms first, and then judge the coherence index from the interferograms to determine whether the area is suitable for InSAR. On the one hand, this requires a large amount of data to be reserved in advance, which greatly increases the production cost. On the other hand, there are currently no archived radar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06F17/18G06T3/40G01S7/40G01S13/90
CPCG06F17/18G06T3/4023G01S7/40G01S13/9023G06V20/13
Inventor 刘智勇祁宏昌刘泽楷张滔来立永黄海生袁俊健冉倩雷超平
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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