Wind-wave effect on ATI-SAR measurements of ocean surface currents in the Baltic Sea

Anis Elyouncha; Leif E.B. Eriksson; Roland Romeiser; Gisela K. Carvajal; Lars M.H. Ulander

doi:10.1109/IGARSS.2016.7730035

Wind-wave effect on ATI-SAR measurements of ocean surface currents in the Baltic Sea

Anis Elyouncha, Leif E.B. Eriksson, Roland Romeiser, Gisela K. Carvajal, Lars M.H. Ulander

Ocean Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Along-Track Interferometric (ATI) SAR has demonstrated through several studies a capability to detect ocean surface currents. One of the most challenging problems in ocean surface current retrieval using SAR is the removal of the wind-wave contribution. The phase difference provided by ATI-SAR technique is directly related to the radial velocity of the moving ocean surface. In order to infer the current-only velocity from the total phase the wind-wave contribution need to be removed. This is achieved by simulation of SAR Doppler spectra from given wind fields. This paper investigates the effect of the local wind on ATI-SAR phase. A study case, where the backscatter modulation is dominated by the wind variation, is illustrated using TanDEM-X data over the Baltic Sea. It is shown that retrieving high resolution winds from SAR data using an empirical wind model and using the retrieved winds as input to the SAR imaging model improves the simulated SAR signatures.

Original language	English (US)
Title of host publication	2016 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	3982-3985
Number of pages	4
Volume	2016-November
ISBN (Electronic)	9781509033324
DOIs	https://doi.org/10.1109/IGARSS.2016.7730035
State	Published - Nov 1 2016
Event	36th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Beijing, China Duration: Jul 10 2016 → Jul 15 2016

Other

Other	36th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016
Country	China
City	Beijing
Period	7/10/16 → 7/15/16

Keywords

ATI SAR
Ocean current
SAR Doppler
SAR wind

ASJC Scopus subject areas

Computer Science Applications
Earth and Planetary Sciences(all)

Access to Document

10.1109/IGARSS.2016.7730035

Fingerprint Dive into the research topics of 'Wind-wave effect on ATI-SAR measurements of ocean surface currents in the Baltic Sea'. Together they form a unique fingerprint.

Cite this

Elyouncha, A., Eriksson, L. E. B., Romeiser, R., Carvajal, G. K., & Ulander, L. M. H. (2016). Wind-wave effect on ATI-SAR measurements of ocean surface currents in the Baltic Sea. In 2016 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Proceedings (Vol. 2016-November, pp. 3982-3985). [7730035] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IGARSS.2016.7730035

Wind-wave effect on ATI-SAR measurements of ocean surface currents in the Baltic Sea. / Elyouncha, Anis; Eriksson, Leif E.B.; Romeiser, Roland; Carvajal, Gisela K.; Ulander, Lars M.H.

2016 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Proceedings. Vol. 2016-November Institute of Electrical and Electronics Engineers Inc., 2016. p. 3982-3985 7730035.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Elyouncha, A, Eriksson, LEB, Romeiser, R, Carvajal, GK & Ulander, LMH 2016, Wind-wave effect on ATI-SAR measurements of ocean surface currents in the Baltic Sea. in 2016 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Proceedings. vol. 2016-November, 7730035, Institute of Electrical and Electronics Engineers Inc., pp. 3982-3985, 36th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016, Beijing, China, 7/10/16. https://doi.org/10.1109/IGARSS.2016.7730035

Elyouncha A, Eriksson LEB, Romeiser R, Carvajal GK, Ulander LMH. Wind-wave effect on ATI-SAR measurements of ocean surface currents in the Baltic Sea. In 2016 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Proceedings. Vol. 2016-November. Institute of Electrical and Electronics Engineers Inc. 2016. p. 3982-3985. 7730035 https://doi.org/10.1109/IGARSS.2016.7730035

Elyouncha, Anis ; Eriksson, Leif E.B. ; Romeiser, Roland ; Carvajal, Gisela K. ; Ulander, Lars M.H. / Wind-wave effect on ATI-SAR measurements of ocean surface currents in the Baltic Sea. 2016 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Proceedings. Vol. 2016-November Institute of Electrical and Electronics Engineers Inc., 2016. pp. 3982-3985

@inproceedings{d7c460b1140f4a03b7fcef089a4ab1b6,

title = "Wind-wave effect on ATI-SAR measurements of ocean surface currents in the Baltic Sea",

abstract = "Along-Track Interferometric (ATI) SAR has demonstrated through several studies a capability to detect ocean surface currents. One of the most challenging problems in ocean surface current retrieval using SAR is the removal of the wind-wave contribution. The phase difference provided by ATI-SAR technique is directly related to the radial velocity of the moving ocean surface. In order to infer the current-only velocity from the total phase the wind-wave contribution need to be removed. This is achieved by simulation of SAR Doppler spectra from given wind fields. This paper investigates the effect of the local wind on ATI-SAR phase. A study case, where the backscatter modulation is dominated by the wind variation, is illustrated using TanDEM-X data over the Baltic Sea. It is shown that retrieving high resolution winds from SAR data using an empirical wind model and using the retrieved winds as input to the SAR imaging model improves the simulated SAR signatures.",

keywords = "ATI SAR, Ocean current, SAR Doppler, SAR wind",

author = "Anis Elyouncha and Eriksson, {Leif E.B.} and Roland Romeiser and Carvajal, {Gisela K.} and Ulander, {Lars M.H.}",

year = "2016",

month = nov,

day = "1",

doi = "10.1109/IGARSS.2016.7730035",

language = "English (US)",

volume = "2016-November",

pages = "3982--3985",

booktitle = "2016 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Proceedings",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

note = "36th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 ; Conference date: 10-07-2016 Through 15-07-2016",

}

TY - GEN

T1 - Wind-wave effect on ATI-SAR measurements of ocean surface currents in the Baltic Sea

AU - Elyouncha, Anis

AU - Eriksson, Leif E.B.

AU - Romeiser, Roland

AU - Carvajal, Gisela K.

AU - Ulander, Lars M.H.

PY - 2016/11/1

Y1 - 2016/11/1

N2 - Along-Track Interferometric (ATI) SAR has demonstrated through several studies a capability to detect ocean surface currents. One of the most challenging problems in ocean surface current retrieval using SAR is the removal of the wind-wave contribution. The phase difference provided by ATI-SAR technique is directly related to the radial velocity of the moving ocean surface. In order to infer the current-only velocity from the total phase the wind-wave contribution need to be removed. This is achieved by simulation of SAR Doppler spectra from given wind fields. This paper investigates the effect of the local wind on ATI-SAR phase. A study case, where the backscatter modulation is dominated by the wind variation, is illustrated using TanDEM-X data over the Baltic Sea. It is shown that retrieving high resolution winds from SAR data using an empirical wind model and using the retrieved winds as input to the SAR imaging model improves the simulated SAR signatures.

AB - Along-Track Interferometric (ATI) SAR has demonstrated through several studies a capability to detect ocean surface currents. One of the most challenging problems in ocean surface current retrieval using SAR is the removal of the wind-wave contribution. The phase difference provided by ATI-SAR technique is directly related to the radial velocity of the moving ocean surface. In order to infer the current-only velocity from the total phase the wind-wave contribution need to be removed. This is achieved by simulation of SAR Doppler spectra from given wind fields. This paper investigates the effect of the local wind on ATI-SAR phase. A study case, where the backscatter modulation is dominated by the wind variation, is illustrated using TanDEM-X data over the Baltic Sea. It is shown that retrieving high resolution winds from SAR data using an empirical wind model and using the retrieved winds as input to the SAR imaging model improves the simulated SAR signatures.

KW - ATI SAR

KW - Ocean current

KW - SAR Doppler

KW - SAR wind

UR - http://www.scopus.com/inward/record.url?scp=85007483300&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85007483300&partnerID=8YFLogxK

U2 - 10.1109/IGARSS.2016.7730035

DO - 10.1109/IGARSS.2016.7730035

M3 - Conference contribution

AN - SCOPUS:85007483300

VL - 2016-November

SP - 3982

EP - 3985

BT - 2016 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 36th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016

Y2 - 10 July 2016 through 15 July 2016

ER -