Range focusing in volumetric SAR: A phase recovery approach

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

Synthetic aperture radar (SAR) systems have been introduced to essentially increase the azimuth resolution. This has been possible by coherently combining the range compressed information along the flying track. The key point is to have a set of calibrated measurements. While the problem of calibration and digitally focusing of the pulses, collected along a single pass, has been significantly investigated, there has been very little attention to the multipass scenario. In this setting the range estimation error can be generally larger and, as a result, conventional range focusing techniques will normally fail to correct such errors. We here investigate the problem of volumetric SAR, where a set of range compressed pulses are provided by multipass circular trials. We demonstrate that the range estimation error causes some structured phase errors, which can be then formulated as a phase recovery problem. We introduce a new range focusing method using Gerchberg-Saxton type phase recovery. We finally show that the new technique is capable of correcting the range error up to a small offset.

Original languageEnglish
Title of host publicationProceedings of the European Conference on Synthetic Aperture Radar, EUSAR
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-4
Number of pages4
ISBN (Electronic)9783800742288
Publication statusPublished - 2016
Event11th European Conference on Synthetic Aperture Radar, EUSAR 2016 - Hamburg, Germany
Duration: 6 Jun 20169 Jun 2016

Conference

Conference11th European Conference on Synthetic Aperture Radar, EUSAR 2016
Country/TerritoryGermany
CityHamburg
Period6/06/169/06/16

Fingerprint

Dive into the research topics of 'Range focusing in volumetric SAR: A phase recovery approach'. Together they form a unique fingerprint.

Cite this