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Open AccessTechnical Note
Remote Sens. 2016, 8(1), 40; doi:10.3390/rs8010040

The InSAeS4 Airborne X-Band Interferometric SAR System: A First Assessment on Its Imaging and Topographic Mapping Capabilities

1
Istituto per il Rilevamento Elettromagnetico dell’Ambiente (IREA)—Consiglio Nazionale delle Ricerche (CNR), Napoli 80124, Italy
2
Dipartimento di Ingegneria (DI), Università degli Studi di Napoli “Parthenope”, Napoli 80143, Italy
3
Dipartimento di Ingegneria (DING), Università degli Studi del Sannio, Benevento 82100, Italy
4
Bradar Indústria S/A, São José dos Campos (SP), 12244-000, Brazil
*
Author to whom correspondence should be addressed.
Academic Editors: Richard Gloaguen and Prasad S. Thenkabail
Received: 26 November 2015 / Revised: 23 December 2015 / Accepted: 30 December 2015 / Published: 6 January 2016
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Abstract

We present in this work a first assessment of the imaging and topographic mapping capabilities of the InSAeS4 system, which is a single-pass interferometric airborne X-Band Synthetic Aperture Radar (SAR). In particular, we first provide a brief description of the InSAeS4 sensor. Then, we discuss the results of our analysis on the SAR and interferometric SAR products relevant to the first flight-test campaign. More specifically, we have exploited as reference the GPS measurements relevant to nine Corner Reflectors (CRs) deployed over the illuminated area during the campaign and a laser scanner Digital Elevation Model (DEM). From the analysis carried out on the CRs we achieved a mean geometric resolution, for the SAR products, of about 0.14 m in azimuth and 0.49 m in range, a positioning misalignment with standard deviation of 0.07 m in range and 0.08 m in azimuth, and a height error with standard deviation of 0.51 m. From the comparison with the laser scanner DEM we estimated a height error with standard deviation of 1.57 m. View Full-Text
Keywords: Synthetic Aperture Radar (SAR); airborne SAR; airborne SAR Interferometery; Digital Elevation Model (DEM) Synthetic Aperture Radar (SAR); airborne SAR; airborne SAR Interferometery; Digital Elevation Model (DEM)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Perna, S.; Esposito, C.; Amaral, T.; Berardino, P.; Jackson, G.; Moreira, J.; Pauciullo, A.; Vaz Junior, E.; Wimmer, C.; Lanari, R. The InSAeS4 Airborne X-Band Interferometric SAR System: A First Assessment on Its Imaging and Topographic Mapping Capabilities. Remote Sens. 2016, 8, 40.

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