Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for estimating terrain by polarization interference of data of synthetic aperture radar

A technology for interfering synthetic aperture and radar data, which is applied in the field of synthetic aperture radar remote sensing information processing, and can solve problems such as extraction of terrain interferometric phase

Inactive Publication Date: 2012-01-25
INST OF ELECTRONICS CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned softwares all contain polarization interferometric data processing modules, but they uniformly use coherent optimal or coherent scattering model-based methods to estimate the topographic interferometric phase, and do not have the function of selecting different polarization interferometric methods to extract the topographic interferometric phase in different land types

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for estimating terrain by polarization interference of data of synthetic aperture radar
  • Method for estimating terrain by polarization interference of data of synthetic aperture radar
  • Method for estimating terrain by polarization interference of data of synthetic aperture radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0136] Firstly, the polarization interferometric data is introduced, which is composed of two sets of fully polarized data such as figure 1 data shown. Full polarization data refers to the four polarities hh, hv, vh, vv obtained by the full polarization antenna system sending horizontal polarization (h) and vertical polarization (v) to send radar signals, and using h, v polarization to receive signals The original echo data in the polarized state, and the complex data S of the hh, hv, vh, and vv polarization states in the same azimuth and slant range positions obtained through imaging processing hh (m, n), S hv (m, n), S vh (m, n), S vv (m, n) constitutes. The polarimetric interferometric SAR data is composed of two sets of fully polarimetric SAR data collected at different times or at different locations at the same time, and the radar signals in each polarization state of each group must be imaged separately. It is also necessary to go through polarization calibration p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for estimating terrain by the polarization interference of the data of a synthetic aperture radar and a software thereof, which relate to synthetic aperture radars. The method comprises the following steps of: (A) filtering polarization interference data; (B) distinguishing different land types by utilizing a polarization classification technique; (C) dividing thedata into the land types to form a plurality of simple subblocks; (D) estimating the terrain interference phase of each subblock respectively; (E) processing the terrain interference phase of each subblock in parallel and estimating the terrain of each subblock; and (F) combining the terrain of each subblock and calculating an integral terrain result. The method and the software introduce the polarization classification technique, divide the data into the land types to form a plurality of simple subblocks for processing, adopt different polarization interference methods according to the difference of the land types contained in the subblocks to estimate the terrain interference phases and then calculate the terrain of each subblock. The method not only lowers the difficulty of estimating the terrain of the complicated areas formed by the land types but also enhances the estimation efficiency of the terrain of this class of areas.

Description

technical field [0001] The invention belongs to the technical field of synthetic aperture radar remote sensing information processing, and specifically relates to a method for estimating terrain from polarization interference synthetic aperture radar data and its software. It uses the advantages of polarization classification technology to divide the data of complex areas of land types into several subsections. Block processing reduces the difficulty of terrain interferometric phase estimation and improves the efficiency of terrain estimation; in estimating the terrain interferometric phase of each sub-block, different polarization interferometry methods are used to estimate the terrain interferometric phase for the single scattering center area and the multi-scattering center area ; Due to the differences in the types of multi-scattering center areas between different sub-blocks, different methods are selected to extract the terrain interferometric phase, which is more suitabl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/90G01S7/41
Inventor 洪文白璐曹芳
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com