METH-33 - Performance assessment for the high resolution and wide swath (HRWS) post-Sentinel-1 SAR system

Mariantonietta Zonno, Sanjuan-Ferrer, Maria J. , Paco Lopez-Dekker, Ramon Hanssen, Freek van Leijen, Henning Skriver, Rick Danielson, Thomas Nagler, Leif T. Pedersen, Oliver Lang, Antonio Gabriele, Michael Ludwig, Arnaud Lecuyot

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Abstract

The next generation, post-Sentinel-1, ESA’s C-band synthetic aperture radar (SAR) system is conceived to provide simultaneously high azimuth resolution and wide swath width (HRWS).There are different ways in which the imaging capabilities of the HRWS SAR system can be exploited, which translate to different operation modes. The more attractive are the wide swath modes, operating in ScanSAR, with 400 km swath width and a resolution of 5m x 5m for single/dual-polarization and, maybe even more noteworthy, the fully-polarimetric 280 km swath width at 5m x 5m single-look resolution. These modes represent a factor four improvement in terms of azimuth resolution with respect to Sentinel-1. Considering also the extended swath or the quad-pol capabilities, the information rate will increase by close to and order of magnitude.Indeed, wide unambiguous swath coverage and high azimuth resolution pose contradicting requirements on the design of spaceborne SAR systems. Nevertheless, recent studies have shown that by applying Digital Beam Forming (DBF) techniques, such as Scan-on-Receive (SCORE), and Multiple Azimuth Phase centers (MAPS), it becomes possible to overcome these fundamental limitations of conventional SAR systems. The use of MAPS in azimuth enables the decoupling of the high azimuth resolution and wide-swath SAR coverage. It employs a multichannel receiver in combination with mutually displaced multiple aperture elements and the azimuth resolution results determined by the length of the individual sub-aperture elements. At the same time, employing multiple channels in elevation, according to the SCORE technique, allows to collect radar echoes from a wide image swath despite using a receiver aperture with large vertical extension. The trade-off between antenna gain and swath width can thus be relaxed.In this framework, DLR has reviewed the capabilities of the HRWS SAR system in light of the associated requirements provided by ESA and of the science requirements associated to operational GMES applications. Indeed, many and potentially new applications can benefit from the HRWS SAR operational modes.Moreover, a HRWS application performance toolkit has been designed and implemented to compare product-level performance for different operating modes and mission scenarios.The established applications defined within the GMES services and selected for the HRWS performance study are:Deformation monitoringRegional land coverOcean applications (wind and currents retrieval and oil spill monitoring)Land ice (wet snow mapping and ice drift)Sea ice (iceberg detection and ice motion)Iceberg detectionSecurity (vessel detection )Thus, th resulting HRWS toolkit includes for every application analytical expressions or numerical models and, if these are not available, real SAR images as well as numerical algorithms and some explicit simulations of the data and of the inversion process are employed. The tool uses as input the HRWS SAR instrument performance for the different applicable modes and produces as output results comparable with the existing C-band SAR missions.Due to its wider swath, high resolution and multipolarimetric capabilities, the performance for the HRWS SAR system show a substantial improvement when compared to those of Sentinel-1A, for most of the applications and operational scenarios.In the final paper a short description of the employed product-level performance models together with the main results will be provided. Furthermore, an analysis based on the different applications performance and on their relative relevance will give a single operational mode for the best compromise.
Original languageEnglish
Publication date2016
Number of pages1
Publication statusPublished - 2016
EventESA Living Planet Symposium 2016 - Prague, Czech Republic
Duration: 9 May 201613 May 2016
http://lps16.esa.int/

Conference

ConferenceESA Living Planet Symposium 2016
CountryCzech Republic
CityPrague
Period09/05/201613/05/2016
Internet address

Cite this

Zonno, M., Maria J. , S-F., Lopez-Dekker, P., Hanssen, R., Leijen, F. V., Skriver, H., ... Lecuyot, A. (2016). METH-33 - Performance assessment for the high resolution and wide swath (HRWS) post-Sentinel-1 SAR system. Abstract from ESA Living Planet Symposium 2016, Prague, Czech Republic.
Zonno, Mariantonietta ; Maria J. , Sanjuan-Ferrer, ; Lopez-Dekker, Paco ; Hanssen, Ramon ; Leijen, Freek van ; Skriver, Henning ; Danielson, Rick ; Nagler, Thomas ; Pedersen, Leif T. ; Lang, Oliver ; Gabriele, Antonio ; Ludwig, Michael ; Lecuyot, Arnaud . / METH-33 - Performance assessment for the high resolution and wide swath (HRWS) post-Sentinel-1 SAR system. Abstract from ESA Living Planet Symposium 2016, Prague, Czech Republic.1 p.
@conference{4c8d3e7c0f9d41658e5687351ba5f77a,
title = "METH-33 - Performance assessment for the high resolution and wide swath (HRWS) post-Sentinel-1 SAR system",
abstract = "The next generation, post-Sentinel-1, ESA’s C-band synthetic aperture radar (SAR) system is conceived to provide simultaneously high azimuth resolution and wide swath width (HRWS).There are different ways in which the imaging capabilities of the HRWS SAR system can be exploited, which translate to different operation modes. The more attractive are the wide swath modes, operating in ScanSAR, with 400 km swath width and a resolution of 5m x 5m for single/dual-polarization and, maybe even more noteworthy, the fully-polarimetric 280 km swath width at 5m x 5m single-look resolution. These modes represent a factor four improvement in terms of azimuth resolution with respect to Sentinel-1. Considering also the extended swath or the quad-pol capabilities, the information rate will increase by close to and order of magnitude.Indeed, wide unambiguous swath coverage and high azimuth resolution pose contradicting requirements on the design of spaceborne SAR systems. Nevertheless, recent studies have shown that by applying Digital Beam Forming (DBF) techniques, such as Scan-on-Receive (SCORE), and Multiple Azimuth Phase centers (MAPS), it becomes possible to overcome these fundamental limitations of conventional SAR systems. The use of MAPS in azimuth enables the decoupling of the high azimuth resolution and wide-swath SAR coverage. It employs a multichannel receiver in combination with mutually displaced multiple aperture elements and the azimuth resolution results determined by the length of the individual sub-aperture elements. At the same time, employing multiple channels in elevation, according to the SCORE technique, allows to collect radar echoes from a wide image swath despite using a receiver aperture with large vertical extension. The trade-off between antenna gain and swath width can thus be relaxed.In this framework, DLR has reviewed the capabilities of the HRWS SAR system in light of the associated requirements provided by ESA and of the science requirements associated to operational GMES applications. Indeed, many and potentially new applications can benefit from the HRWS SAR operational modes.Moreover, a HRWS application performance toolkit has been designed and implemented to compare product-level performance for different operating modes and mission scenarios.The established applications defined within the GMES services and selected for the HRWS performance study are:Deformation monitoringRegional land coverOcean applications (wind and currents retrieval and oil spill monitoring)Land ice (wet snow mapping and ice drift)Sea ice (iceberg detection and ice motion)Iceberg detectionSecurity (vessel detection )Thus, th resulting HRWS toolkit includes for every application analytical expressions or numerical models and, if these are not available, real SAR images as well as numerical algorithms and some explicit simulations of the data and of the inversion process are employed. The tool uses as input the HRWS SAR instrument performance for the different applicable modes and produces as output results comparable with the existing C-band SAR missions.Due to its wider swath, high resolution and multipolarimetric capabilities, the performance for the HRWS SAR system show a substantial improvement when compared to those of Sentinel-1A, for most of the applications and operational scenarios.In the final paper a short description of the employed product-level performance models together with the main results will be provided. Furthermore, an analysis based on the different applications performance and on their relative relevance will give a single operational mode for the best compromise.",
author = "Mariantonietta Zonno and {Maria J.}, Sanjuan-Ferrer, and Paco Lopez-Dekker and Ramon Hanssen and Leijen, {Freek van} and Henning Skriver and Rick Danielson and Thomas Nagler and Pedersen, {Leif T.} and Oliver Lang and Antonio Gabriele and Michael Ludwig and Arnaud Lecuyot",
year = "2016",
language = "English",
note = "ESA Living Planet Symposium 2016 ; Conference date: 09-05-2016 Through 13-05-2016",
url = "http://lps16.esa.int/",

}

Zonno, M, Maria J. , S-F, Lopez-Dekker, P, Hanssen, R, Leijen, FV, Skriver, H, Danielson, R, Nagler, T, Pedersen, LT, Lang, O, Gabriele, A, Ludwig, M & Lecuyot, A 2016, 'METH-33 - Performance assessment for the high resolution and wide swath (HRWS) post-Sentinel-1 SAR system', ESA Living Planet Symposium 2016, Prague, Czech Republic, 09/05/2016 - 13/05/2016.

METH-33 - Performance assessment for the high resolution and wide swath (HRWS) post-Sentinel-1 SAR system. / Zonno, Mariantonietta; Maria J. , Sanjuan-Ferrer,; Lopez-Dekker, Paco; Hanssen, Ramon; Leijen, Freek van; Skriver, Henning; Danielson, Rick ; Nagler, Thomas ; Pedersen, Leif T.; Lang, Oliver ; Gabriele, Antonio; Ludwig, Michael ; Lecuyot, Arnaud .

2016. Abstract from ESA Living Planet Symposium 2016, Prague, Czech Republic.

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

TY - ABST

T1 - METH-33 - Performance assessment for the high resolution and wide swath (HRWS) post-Sentinel-1 SAR system

AU - Zonno, Mariantonietta

AU - Maria J. , Sanjuan-Ferrer,

AU - Lopez-Dekker, Paco

AU - Hanssen, Ramon

AU - Leijen, Freek van

AU - Skriver, Henning

AU - Danielson, Rick

AU - Nagler, Thomas

AU - Pedersen, Leif T.

AU - Lang, Oliver

AU - Gabriele, Antonio

AU - Ludwig, Michael

AU - Lecuyot, Arnaud

PY - 2016

Y1 - 2016

N2 - The next generation, post-Sentinel-1, ESA’s C-band synthetic aperture radar (SAR) system is conceived to provide simultaneously high azimuth resolution and wide swath width (HRWS).There are different ways in which the imaging capabilities of the HRWS SAR system can be exploited, which translate to different operation modes. The more attractive are the wide swath modes, operating in ScanSAR, with 400 km swath width and a resolution of 5m x 5m for single/dual-polarization and, maybe even more noteworthy, the fully-polarimetric 280 km swath width at 5m x 5m single-look resolution. These modes represent a factor four improvement in terms of azimuth resolution with respect to Sentinel-1. Considering also the extended swath or the quad-pol capabilities, the information rate will increase by close to and order of magnitude.Indeed, wide unambiguous swath coverage and high azimuth resolution pose contradicting requirements on the design of spaceborne SAR systems. Nevertheless, recent studies have shown that by applying Digital Beam Forming (DBF) techniques, such as Scan-on-Receive (SCORE), and Multiple Azimuth Phase centers (MAPS), it becomes possible to overcome these fundamental limitations of conventional SAR systems. The use of MAPS in azimuth enables the decoupling of the high azimuth resolution and wide-swath SAR coverage. It employs a multichannel receiver in combination with mutually displaced multiple aperture elements and the azimuth resolution results determined by the length of the individual sub-aperture elements. At the same time, employing multiple channels in elevation, according to the SCORE technique, allows to collect radar echoes from a wide image swath despite using a receiver aperture with large vertical extension. The trade-off between antenna gain and swath width can thus be relaxed.In this framework, DLR has reviewed the capabilities of the HRWS SAR system in light of the associated requirements provided by ESA and of the science requirements associated to operational GMES applications. Indeed, many and potentially new applications can benefit from the HRWS SAR operational modes.Moreover, a HRWS application performance toolkit has been designed and implemented to compare product-level performance for different operating modes and mission scenarios.The established applications defined within the GMES services and selected for the HRWS performance study are:Deformation monitoringRegional land coverOcean applications (wind and currents retrieval and oil spill monitoring)Land ice (wet snow mapping and ice drift)Sea ice (iceberg detection and ice motion)Iceberg detectionSecurity (vessel detection )Thus, th resulting HRWS toolkit includes for every application analytical expressions or numerical models and, if these are not available, real SAR images as well as numerical algorithms and some explicit simulations of the data and of the inversion process are employed. The tool uses as input the HRWS SAR instrument performance for the different applicable modes and produces as output results comparable with the existing C-band SAR missions.Due to its wider swath, high resolution and multipolarimetric capabilities, the performance for the HRWS SAR system show a substantial improvement when compared to those of Sentinel-1A, for most of the applications and operational scenarios.In the final paper a short description of the employed product-level performance models together with the main results will be provided. Furthermore, an analysis based on the different applications performance and on their relative relevance will give a single operational mode for the best compromise.

AB - The next generation, post-Sentinel-1, ESA’s C-band synthetic aperture radar (SAR) system is conceived to provide simultaneously high azimuth resolution and wide swath width (HRWS).There are different ways in which the imaging capabilities of the HRWS SAR system can be exploited, which translate to different operation modes. The more attractive are the wide swath modes, operating in ScanSAR, with 400 km swath width and a resolution of 5m x 5m for single/dual-polarization and, maybe even more noteworthy, the fully-polarimetric 280 km swath width at 5m x 5m single-look resolution. These modes represent a factor four improvement in terms of azimuth resolution with respect to Sentinel-1. Considering also the extended swath or the quad-pol capabilities, the information rate will increase by close to and order of magnitude.Indeed, wide unambiguous swath coverage and high azimuth resolution pose contradicting requirements on the design of spaceborne SAR systems. Nevertheless, recent studies have shown that by applying Digital Beam Forming (DBF) techniques, such as Scan-on-Receive (SCORE), and Multiple Azimuth Phase centers (MAPS), it becomes possible to overcome these fundamental limitations of conventional SAR systems. The use of MAPS in azimuth enables the decoupling of the high azimuth resolution and wide-swath SAR coverage. It employs a multichannel receiver in combination with mutually displaced multiple aperture elements and the azimuth resolution results determined by the length of the individual sub-aperture elements. At the same time, employing multiple channels in elevation, according to the SCORE technique, allows to collect radar echoes from a wide image swath despite using a receiver aperture with large vertical extension. The trade-off between antenna gain and swath width can thus be relaxed.In this framework, DLR has reviewed the capabilities of the HRWS SAR system in light of the associated requirements provided by ESA and of the science requirements associated to operational GMES applications. Indeed, many and potentially new applications can benefit from the HRWS SAR operational modes.Moreover, a HRWS application performance toolkit has been designed and implemented to compare product-level performance for different operating modes and mission scenarios.The established applications defined within the GMES services and selected for the HRWS performance study are:Deformation monitoringRegional land coverOcean applications (wind and currents retrieval and oil spill monitoring)Land ice (wet snow mapping and ice drift)Sea ice (iceberg detection and ice motion)Iceberg detectionSecurity (vessel detection )Thus, th resulting HRWS toolkit includes for every application analytical expressions or numerical models and, if these are not available, real SAR images as well as numerical algorithms and some explicit simulations of the data and of the inversion process are employed. The tool uses as input the HRWS SAR instrument performance for the different applicable modes and produces as output results comparable with the existing C-band SAR missions.Due to its wider swath, high resolution and multipolarimetric capabilities, the performance for the HRWS SAR system show a substantial improvement when compared to those of Sentinel-1A, for most of the applications and operational scenarios.In the final paper a short description of the employed product-level performance models together with the main results will be provided. Furthermore, an analysis based on the different applications performance and on their relative relevance will give a single operational mode for the best compromise.

M3 - Conference abstract for conference

ER -

Zonno M, Maria J. S-F, Lopez-Dekker P, Hanssen R, Leijen FV, Skriver H et al. METH-33 - Performance assessment for the high resolution and wide swath (HRWS) post-Sentinel-1 SAR system. 2016. Abstract from ESA Living Planet Symposium 2016, Prague, Czech Republic.