公开(公告)号：US12270897B1

公开(公告)日：2025-04-08

申请号：US18794484

申请日：2024-08-05

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Xiaoqing Zuo ,  Shipeng Guo ,  Weiwei Song ,  Yongfa Li ,  Jihong Zhang ,  Daming Zhu ,  Cheng Huang ,  Zhuohui Xiao ,  Menghua Li ,  Sumin Li ,  Qingwang Wang

IPC: G01S13/90 ,  G01S7/40

Abstract: Disclosed is a time series InSAR tropospheric delay correction method for relieving atmospheric seasonal oscillation, so as to relieve the seasonal oscillation deviation caused by tropospheric delay. This method is based on the temporal and spatial characteristics of atmospheric delay. Firstly, based on the ERA-5 atmospheric grid data covering the study area, the ZTD negative exponential vertical profile function model is established. Fourier series function is introduced to establish the time series model for β and ZTDr, Finally, according to the radar incidence angle parameters, the delay is changed from zenith direction to radar line of sight direction.