2D Frequency Domain Fully Focused SAR Processing for High PRF Radar Altimeters
Fully-focusing of radar altimeters is a recent concept that has been introduced to allow further improvement of along-track resolution in high pulse repetition frequency (PRF) radar altimeters. The straight potentiality of this new perspective reflects into a more accurate estimation of geophysical...
Published in: | Remote Sensing |
---|---|
Main Authors: | , , |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2018
|
Subjects: | |
Online Access: | https://doi.org/10.3390/rs10121943 |
id |
ftmdpi:oai:mdpi.com:/2072-4292/10/12/1943/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2072-4292/10/12/1943/ 2023-08-20T04:09:44+02:00 2D Frequency Domain Fully Focused SAR Processing for High PRF Radar Altimeters Pietro Guccione Michele Scagliola Davide Giudici agris 2018-12-03 application/pdf https://doi.org/10.3390/rs10121943 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/rs10121943 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 10; Issue 12; Pages: 1943 altimeter Synthetic Aperture Radar Delay/Doppler altimeter Omega-Kappa domain Text 2018 ftmdpi https://doi.org/10.3390/rs10121943 2023-07-31T21:52:57Z Fully-focusing of radar altimeters is a recent concept that has been introduced to allow further improvement of along-track resolution in high pulse repetition frequency (PRF) radar altimeters. The straight potentiality of this new perspective reflects into a more accurate estimation of geophysical parameters in some applications such as sea-ice observation. However, as documented in a recent paper, such capability leaves unsolved the problem of the high computational effort required. In this paper, we face the problem of adapting for altimeters the Omega-Kappa SAR focusing algorithm that is performed in the two-dimensional wavenumber domain, accounting for the difference existing between SAR and altimeter from geometry (looking and swath width) and instrument (echoes are deramped onboard on receiving) point of view. Simulations and an application using in-orbit data show the effectiveness of the proposed approach and the highly reduced computational effort. Text Sea ice MDPI Open Access Publishing Remote Sensing 10 12 1943 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
altimeter Synthetic Aperture Radar Delay/Doppler altimeter Omega-Kappa domain |
spellingShingle |
altimeter Synthetic Aperture Radar Delay/Doppler altimeter Omega-Kappa domain Pietro Guccione Michele Scagliola Davide Giudici 2D Frequency Domain Fully Focused SAR Processing for High PRF Radar Altimeters |
topic_facet |
altimeter Synthetic Aperture Radar Delay/Doppler altimeter Omega-Kappa domain |
description |
Fully-focusing of radar altimeters is a recent concept that has been introduced to allow further improvement of along-track resolution in high pulse repetition frequency (PRF) radar altimeters. The straight potentiality of this new perspective reflects into a more accurate estimation of geophysical parameters in some applications such as sea-ice observation. However, as documented in a recent paper, such capability leaves unsolved the problem of the high computational effort required. In this paper, we face the problem of adapting for altimeters the Omega-Kappa SAR focusing algorithm that is performed in the two-dimensional wavenumber domain, accounting for the difference existing between SAR and altimeter from geometry (looking and swath width) and instrument (echoes are deramped onboard on receiving) point of view. Simulations and an application using in-orbit data show the effectiveness of the proposed approach and the highly reduced computational effort. |
format |
Text |
author |
Pietro Guccione Michele Scagliola Davide Giudici |
author_facet |
Pietro Guccione Michele Scagliola Davide Giudici |
author_sort |
Pietro Guccione |
title |
2D Frequency Domain Fully Focused SAR Processing for High PRF Radar Altimeters |
title_short |
2D Frequency Domain Fully Focused SAR Processing for High PRF Radar Altimeters |
title_full |
2D Frequency Domain Fully Focused SAR Processing for High PRF Radar Altimeters |
title_fullStr |
2D Frequency Domain Fully Focused SAR Processing for High PRF Radar Altimeters |
title_full_unstemmed |
2D Frequency Domain Fully Focused SAR Processing for High PRF Radar Altimeters |
title_sort |
2d frequency domain fully focused sar processing for high prf radar altimeters |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2018 |
url |
https://doi.org/10.3390/rs10121943 |
op_coverage |
agris |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Remote Sensing; Volume 10; Issue 12; Pages: 1943 |
op_relation |
https://dx.doi.org/10.3390/rs10121943 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs10121943 |
container_title |
Remote Sensing |
container_volume |
10 |
container_issue |
12 |
container_start_page |
1943 |
_version_ |
1774723399133691904 |