Supercharge Your Innovation With Domain-Expert AI Agents!

Polarization calibration method for fully polarized multi-input multi-output synthetic aperture radar (FP-MIMO-SAR)

A FP-MIMO-SAR, synthetic aperture radar technology, applied in the direction of reflection/re-radiation of radio waves, utilization of re-radiation, measurement devices, etc., can solve problems such as FP-MIMO-SAR systems that are not mentioned

Active Publication Date: 2018-08-21
BEIHANG UNIV
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

FP-MIMO-SAR systems are barely mentioned in existing literature

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
  • Polarization calibration method for fully polarized multi-input multi-output synthetic aperture radar (FP-MIMO-SAR)
  • Polarization calibration method for fully polarized multi-input multi-output synthetic aperture radar (FP-MIMO-SAR)
  • Polarization calibration method for fully polarized multi-input multi-output synthetic aperture radar (FP-MIMO-SAR)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0072] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0073] figure 1 Schematic diagram for active polarization calibration of MIMO arrays using RODAPARC, figure 2 Schematic diagram for RODAPARC bi-station PSM derivation, image 3 is the variation curve of channel imbalance with channel, Figure 4 For the uncalibrated full polarization image of a metal cylinder obtained by FP-MIMO-SAR, Figure 5 Calibrated full polarization image for a metal cylinder acquired with FP-MIMO-SAR.

[0074] The present invention provides a kind of FP-MIMO-SAR polarization calibration method, the specific introduction of this method is as follows:

[0075] Such as figure 1 As shown, the FP-MIMO-SAR system has a linear antenna array with a total of 80 sets of transceiver channels. RODAPARC has two antennas that can rotate independently. RODAPARC is placed on the v...

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 polarization calibration method for a fully polarized multi-input multi-output synthetic aperture radar (FP-MIMO-SAR). The method adopts a rotatable dual antenna active polarization calibrator (RODAPARC) and a standard metal cylinder as a polarization calibration body, and polarization calibration is achieved by the following two steps that firstly an RODAPARC dual-site polarization scattering matrix (PSM) and an active polarization calibrator full polarization (PARC-FP) radar polarization calibration model are utilized to conduct active polarization calibration on Nsets of transmit-receive channels in the FP-MIMO-SAR and four kinds of polarization combinations in each channel to obtain N sets of polarization calibration parameters; then the standard metal cylindrical calibration body is used for passive polarization calibration to optimize the N sets of polarization calibration parameters, and radiometric calibration, crosstalk and channel imbalance calibration of a radar system are achieved.

Description

technical field [0001] The invention relates to the technical field of multiple-input multiple-output (MIMO) radar, in particular to a polarization calibration method for a full-polarization multiple-input multiple-output synthetic aperture radar (FP-MIMO-SAR). Background technique [0002] MIMO technology was first applied in the communication system to overcome the multipath effect, and then it was introduced into the radar field, and a new radar system based on MIMO technology was proposed (see literature [1] Bliss D W, Forsythe K W, Hero AO, etal.Environmental issues for MIMO capacity[J]. IEEE Transactions on Signal Processing, Vol.50, No.9, pp:2128-2142, 2002.). In order to solve the new requirements faced by the synthetic aperture radar (SAR) system, MIMO technology was introduced into the synthetic aperture radar system (see literature [2]Ender J H G.MIMO-SAR[C] / / Proc.ofInt.Radar Symp.( IRS). Cologne, Germany: [s.n.]: pp: 580-588, 2007.), proposed MIMO-SAR. Using MI...

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
IPC IPC(8): G01S7/40G01S13/90
CPCG01S7/40G01S13/90G01S13/9076
Inventor 孔令宇许小剑
Owner BEIHANG UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com