XXII ISPRS Congress 2012: Technical Commission VII

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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:: [VII/7: THEORY AND EXPERIMENTS IN RADAR AND LIDAR]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: POLINSAR EXPERIMENTS OF MULTI-MODE X-BAND DATA OVER SOUTH AREA OF CHINA Lijun Lu, Qin Yan, MinyanDuan, Yanmei Zhang

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 POLINSAR EXPERIMENTS OF MULTI-MODE X-BAND DATA OVER SOUTH AREA OF CHINA Lijun Lu, Qin Yan, MinyanDuan, Yanmei Zhang Chinese Academy of Surveying and Mapping, Lianhuachi west road, No 28,100830,Beijing, P.R.China lulijun2002@gmail.com Commission VII, VII /7 KEY WORDS: PolInSAR, land classification, objects detection, DSM mapping ABSTRACT: This paper makes the polarimetric and polarimetric interferometric synthetic aperture radar (PolInSAR) experiments with the high- resolution X-band data acquired by Multi-mode airborne SAR system over an area around Linshui, south of China containing tropic vegetation and urban areas. Polarimetric analysis for typical tropic vegetations and man-made objects are presented, some polarimetric descriptors sensitive to vegetations and man-made objects are selected. Then, the PolInSAR information contained in the data is investigated, considering characteristics of the Multi-mode-XSAR dataset, a dual-baseline polarimetric interferometry method is proposed in this paper. The method both guarantees the high coherence on fully polarimetric data and combines the benefits of short and long baseline that helpful to the phase unwrapping and height sensitivity promotion. PolInSAR experiment results displayed demonstrates Multi-mode-XSAR datasets have intuitive capabilities for amount of application of land classification, objects detection and DSM mapping. 1. INTRODUCTION Nowadays, Polarimetric and Interferometric Synthetic Aperture Radar (PolInSAR), as good combination the advantages of SAR Interferometry and SAR Polarimetry, has been widely applied to classification of crops and forests, man-made target detection, measurement of soil, quantitative tree height determination, ground topography mapping and etc. Different from the previous airborne PolInSAR system, Multi-mode-XSAR system developed by the China Electronics Technology Group Corporation 38 department (CET38) provide the possibility to simultaneously observe the ground surface more than once by altering transmitting and receiving mode of pulse signal. Therefore, it is essential to start exploring the potential of multi- mode-XSAR datasets for objects interpretation and digital surface model (DSM) mapping. Section 2 is dedicated to the presentation of multi-mode-XSAR, the experimental airborne SAR system developed by CET38. And the multi-mode-XSAR dataset and the corresponding ground measurements are described. In Section 3 describes a polarimetric analysis for typical vegetations and man-made objects, some polarimetric descriptors sensitive to vegetations and man-made objects are selected for land classification and objects detection. Then, section 4 concerns the phase information in the datasets. Considering characteristics of the multi-mode-XSAR dataset, a dual-baseline polarimetric interferometry method is proposed in this paper. On one hand, it guarantees the high coherence on fully polarimetric data; on the other hand, it combines the benefits of short and long baseline that helpful to the phase unwrapping and height sensitivity promotion. Next, section 5 of this paper displays the PolInSAR experiment results of the land classification, man-made objects detection and DSM mapping. Finally, section 6 gives the conclusion of polInSAR experiment with multi-mode-XSAR data. 2. MULTI-MODE-XSARSYSTEM AND DATASETS 2.1 Multi-mode-XSAR System Multi-mode-XSAR system is developed by CET38. The radar system is placed on China “Y-7” airborne platform and the mean flight velocity is nearly 120 m/sec, at 5000m altitude. The radar incidence angle could be adjusted from 37 degree to 45 degree and the resolutions are 0.1m, 0.4m (azimuth resolution and slant resolution). Especially, it can provide three kinds of working modes including bistatic, ping-pang and mixed modes. The bistatic mode represents one antenna transmit signal and two antennas synchronously receive signals; the ping-pang mode represents antenna pairs alternately transmit and receive signal via the way of transferring transmit/receive(T/R)switch; the mixed mode represents the bistatic mode and the ping-pang mode alternately works at the cost of reducing system bandwidth. The table 1 gives the detailed configuration parameters of Multi-mode-XSAR system. Table 1.Parameters of Multi-mode-XSAR system. Mode Bandwidth Polar Swath width [MHz] (km) bistatic 360 Full 2 ping-pang 300 Full 2 mixed 250 Full 1 2.2 Dataset and ground measurement CET 38 performed several flight plans in LingShui of the south of China from 2009 to 2010, acquiring about 2000 km” PolInSAR datasets over LingShui area. At the same time, three trihedral and dihedral corner reflectors were deployed on the scene for polarimetric and geometric calibration. The three trihedral corner reflectors mostly centralized on the airfield were employed for polarimetric calibration, and i.e. are used to accurately register the different polarization images and to compute the differential delays between channels. The other three trihedral and dihedral corner reflectors widely spread all places are employed for geometric calibration, and i.e. are used to accurately correct geometric position.

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