Title:
METHOD AND SYSTEM FOR QUANTITATIVE EVALUATION OF ATMOSPHERIC DELAY PHASE CORRECTION PRECISION, DEVICE, AND MEDIUM
Document Type and Number:
WIPO Patent Application WO/2024/113421
Kind Code:
A1
Abstract:
The present invention relates to the technical field of environmental monitoring, and provides a method and system for the quantitative evaluation of atmospheric delay phase correction precision, a device, and a medium. The method comprises: extracting a time sequence differential phase value of each PS point from a time sequence correction differential interferogram; calculating a Spearman's rank correlation coefficient between the time sequence differential phase value of each PS point and a time axis; according to the Spearman's rank correlation coefficient and an annual displacement amount of each PS point, obtaining subsidence points among all the PS points, and removing the subsidence points from all the PS points to obtain a plurality of target PS points; and acquiring a time sequence RMSE value of each target PS point, and according to the time sequence RMSE value of each target PS point, obtaining a quantitative evaluation result of atmospheric delay phase correction precision. The method implements the quantitative evaluation of atmospheric delay phase correction, and does not need a hypothesis that the land subsidence or land surface deformation in an evaluation area is zero, thereby greatly ensuring the accuracy of a quantitative evaluation result and providing a basis for realizing optimal atmospheric delay phase correction.
Inventors:
SUN LUYI (CN)
CHEN JINSONG (CN)
LI HONGZHONG (CN)
HAN YU (CN)
CHEN JINSONG (CN)
LI HONGZHONG (CN)
HAN YU (CN)
Application Number:
PCT/CN2022/138820
Publication Date:
June 06, 2024
Filing Date:
December 13, 2022
Export Citation:
Assignee:
SHENZHEN INST ADV TECH (CN)
International Classes:
G01S13/90; G01S7/36
Attorney, Agent or Firm:
BEIJING ZHONG XUN TONG DA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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