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First spaceborne observation of sea surface height using GPS-reflectometry

First spaceborne observation of sea surface height using GPS-reflectometry
First spaceborne observation of sea surface height using GPS-reflectometry
An analysis of spaceborne Global Positioning System reflectometry (GPS-R) data from the TechDemoSat-1 (TDS-1) satellite is carried out to image the ocean sea surface height (SSH). An SSH estimation algorithm is applied to GPS-R delay waveforms over two regions in the South Atlantic and the North Pacific. Estimates made from TDS-1 overpasses during a 6?month period are aggregated to produce SSH maps of the two regions. The maps generally agree with the global DTU10 mean sea surface height. The GPS-R instrument is designed to make bistatic measurements of radar cross section for ocean wind observations, and its altimetric performance is not optimized. The differences observed between measured and DTU10 SSH can be attributed to limitations with the GPS-R instrument and the lack of precision orbit determination by the TDS-1 platform. These results represent the first observations of SSH by a spaceborne GPS-R instrument.
GNSS reflectometry, sea surface height, ocean surface topography, delay Doppler map, TechDemoSat-1
0094-8276
767-774
Clarizia, Maria Paola
c990fc40-109a-42cd-bc15-def020fd4dee
Ruf, Christopher
17c28649-c9e7-4660-877d-a8f2ba12ab32
Cipollini, Paolo
276e356a-f29e-4192-98b3-9340b491dab8
Zuffada, Cinzia
e6298f3f-2e46-4510-b312-a1ca5d59a60e
Clarizia, Maria Paola
c990fc40-109a-42cd-bc15-def020fd4dee
Ruf, Christopher
17c28649-c9e7-4660-877d-a8f2ba12ab32
Cipollini, Paolo
276e356a-f29e-4192-98b3-9340b491dab8
Zuffada, Cinzia
e6298f3f-2e46-4510-b312-a1ca5d59a60e

Clarizia, Maria Paola, Ruf, Christopher, Cipollini, Paolo and Zuffada, Cinzia (2016) First spaceborne observation of sea surface height using GPS-reflectometry. Geophysical Research Letters, 43 (2), 767-774. (doi:10.1002/2015GL066624).

Record type: Article

Abstract

An analysis of spaceborne Global Positioning System reflectometry (GPS-R) data from the TechDemoSat-1 (TDS-1) satellite is carried out to image the ocean sea surface height (SSH). An SSH estimation algorithm is applied to GPS-R delay waveforms over two regions in the South Atlantic and the North Pacific. Estimates made from TDS-1 overpasses during a 6?month period are aggregated to produce SSH maps of the two regions. The maps generally agree with the global DTU10 mean sea surface height. The GPS-R instrument is designed to make bistatic measurements of radar cross section for ocean wind observations, and its altimetric performance is not optimized. The differences observed between measured and DTU10 SSH can be attributed to limitations with the GPS-R instrument and the lack of precision orbit determination by the TDS-1 platform. These results represent the first observations of SSH by a spaceborne GPS-R instrument.

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Accepted/In Press date: 26 January 2016
Published date: January 2016
Keywords: GNSS reflectometry, sea surface height, ocean surface topography, delay Doppler map, TechDemoSat-1
Organisations: Marine Physics and Ocean Climate

Identifiers

Local EPrints ID: 386509
URI: http://eprints.soton.ac.uk/id/eprint/386509
ISSN: 0094-8276
PURE UUID: b0e7dace-746b-4656-987b-d051a339a3a1

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Date deposited: 27 Jan 2016 09:33
Last modified: 16 Dec 2019 20:08

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