XXII ISPRS Congress 2012: Technical Commission VII

Bibliographic data

Multivolume work

Persistent identifier:: 1663813779

Title:: XXII ISPRS Congress 2012

Sub title:: Melbourne, Australia, 25 August-1 September 2012

Year of publication:: 2013

Place of publication:: Red Hook, NY

Publisher of the original:: Curran Associates, Inc.

Identifier (digital):: 1663813779

Language:: English

Additional Notes:: Kongress-Thema: Imaging a sustainable future

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Document type:: Multivolume work

Volume

Persistent identifier:: 1663821976

Title:: Technical Commission VII

Scope:: 546 Seiten

Year of publication:: 2013

Place of publication:: Red Hook, NY

Publisher of the original:: Curran Associates, Inc.

Identifier (digital):: 1663821976

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(39,B7)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist ermittelt.; Literaturangaben

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [ADDITIONAL PAPERS]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: SAR POLARIMETRIC SIGNATURES FOR URBAN TARGETS - POLARIMETRIC SIGNATURE CALCULATION AND VISUALIZATION Professor Anjana Vyas, Ms. Bindi Sashtri

Document type:: Multivolume work

Structure type:: Chapter

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B7, 2012 XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia SAR POLARIMETRIC SIGNATURES FOR URBAN TARGETS - POLARIMETRIC SIGNATURE CALCULATION AND VISUALIZATION Professor Anjana Vyas * *, Ms. Bindi Sashtri? * Faculty of Geomatics & Space Applications, CEPT University, Ahmedabad, Gujarat-380009, India- “anjanavyas{@cept.ac.in , °shastribindy@gmail.com Commission VII, WG VII/2 KEY WORDS: RADARSAT-2, Urban targets, Polarimetric Signatures, Stokes matrix, Copol signature, Crosspol signature ABSTRACT: Various urban targets (land use) from Ahmedabad city were chosen, followed by generation of polarimetric signatures for each target using the developed tool. These polarimetric signatures were then studied and analyzed in detail. An attempt has been to develop a Polarimetric Signature Calculation and Visual Representation Tool assigned name "POLSIC", to generate Co-polarized and Cross polarized signatures, based on the calculation of Stokes Matrix and the backscattered power at various ellipticity and orientation angles. The input parameters required for the developed tool, are the amplitude and phase values of all the four polarizations, for each target using any quadpol radar imagery. In this study, RADARSAT-2 imagery has been used to obtain the amplitude and phase values of each target, in all four polarization states. Polarimetric signatures were generated for various urban targets using the developed tool. Vegetated land, built up in the city, built up within lake, and road were found to have an overall higher polarimetric response (backscattered power) as compared to grass lawn, fallow land and minimum in case of water body. Such Polarimetric responses were obtained due to factors like surface roughness and orientation of the target with respect to the radar look angle. The shape of the signature also indicates the scattering characteristics. 1. INTRODUCTION the Cross polarized signatures have orthogonal transmit and receive polarizations [6]. In order to study the polarization response of various A Polarimetric SAR system measures the targets, ‘Stokes matrix’ has been used. It is a backscattered energy of the targets in the scene, concise description of the polarization response including its polarization state. The interaction of a backscattering object, given in units of of the transmitted wave with a scattering object power. It is a 4x4 matrix, an array of real transforms its polarization. Polarization numbers that transforms the Stokes vector of signature is a graphical representation of the incident wave into Stokes vector of the backscattered power received from a target, as a — scattered wave, for a specific target illuminated function of the polarizations of the incident and by a polarimetric radar system. Research scattered electromagnetic waves. They show the interests in this area of polarimetric study of backscatter response at all combinations of various features have not reached critical mass transmit and receive polarizations and are yet and very few polarimetric processing represented as either co-polarized or cross- software tools are available for various polarized. Co-polarized signatures have the polarimetric data types. Most of the softwares same transmit and receive polarizations, while available for processing of polarimetric data are 335

Access restriction

Copyright

fullscreen: Technical Commission VII (B7)

Multivolume work

Volume

Chapter

Chapter

Table of contents

Cite and reuse

Volume

Chapter

Image

Image fragment

Citation links

Citation recommendation