The proof of concept for 3-cm Altimetry using the Paris Interferometric Technique

Nogués-Correig, O.; Ribó, S.; Arco, J.C.; Cardellach, Estel; Rius, A.; Valencia, E.; Tarongi, J.M.; Camps, A.; Marel, H. van der; Martín-Neira, Manuel

doi:10.1109/igarss.2010.5650807

Cited by 11 publications

(6 citation statements)

References 3 publications

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“…These airborne experiments were sponsored by the European Space Agency to test the new "interferometric" GNSS-R techniques, with a modified version of the GOLD-RTR instrument named PIR-A (PARIS Interferometric Receiver-Airborne) ( [18]- [20]). …”

Section: A Experimental Set-upmentioning

confidence: 99%

GNSS-R Derived Centimetric Sea Topography: An Airborne Experiment Demonstration

Carreño-Luengo

Park

Camps

et al. 2013

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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The results of two airborne experiments performed to test the precision and the relative accuracy of the conventional Global Navigation Satellite Systems Reflectometry (GNSS-R) technique employing only the C/A code are presented. The first and the second experiments demonstrate, respectively, a 17 cm precision for a 500 m flight altitude with a 8 km along-track spatial resolution, and a 6 cm precision for a 3000 m flight altitude with a 6.6 km along-track spatial resolution. In both, the Relative Mean Dynamic Topography (RMDT) is compared with results derived from traditional radar altimetry provided by Jason-2. The Root Mean Square (RMS) of the RMDT difference between both measurement systems is 48 cm for the first flight, and 198 cm for the second flight. During the second flight, the feasibility of the proposed technique to measure the sea slopes is demonstrated by superposing over the aircraft ground track the measured sea surface height with the geoid undulations, which are about 1 meter.

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Section: A Experimental Set-upmentioning

confidence: 99%

GNSS-R Derived Centimetric Sea Topography: An Airborne Experiment Demonstration

Carreño-Luengo

Park

Camps

et al. 2013

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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“…In 1993, Martin‐Neira [] proposed, for the first time, to use GPS reflectometry for mesoscale altimetry. Applications to ocean remote sensing have received by far the most attention to date, with many more studies focused on the retrieval of sea surface height [e.g., Lowe et al , ; Ruffini et al , ; Nogues‐Correig et al , ; Carreno‐Luengo et al , ] and ocean surface wind speed or mean square slope [e.g., Garrison et al , ; Rius et al , ; Komjathy et al , ; Katzberg et al , ; Clarizia et al , ]. GNSS‐R ocean roughness data can also contribute to better ocean salinity retrieval by providing better correction for sea state effects [e.g., Valencia et al , ].…”

Section: Introductionmentioning

confidence: 99%

Spaceborne GNSS reflectometry for ocean winds: First results from the UK TechDemoSat‐1 mission

Foti

Gommenginger

Jales

et al. 2015

Geophysical Research Letters

292

169

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First results are presented for ocean surface wind speed retrieval from reflected GPS signals measured by the low Earth orbiting UK TechDemoSat‐1 satellite (TDS‐1). Launched in July 2014, TDS‐1 provides the first new spaceborne Global Navigation Satellite System‐Reflectometry (GNSS‐R) data since the pioneering UK‐Disaster Monitoring Mission (UK‐DMC) experiment in 2003. Examples of onboard‐processed delay‐Doppler maps reveal excellent data quality for winds up to 27.9 m/s. Collocated Advanced Scatterometer (ASCAT) winds are used to develop and evaluate a wind speed algorithm based on signal‐to‐noise ratio (SNR) and the bistatic radar equation. For SNRs greater than 3 dB, wind speed is retrieved without bias and a precision around 2.2 m/s between 3 and 18 m/s even without calibration. Exploiting lower SNR signals, however, requires good knowledge of the antenna beam, platform attitude, and instrument gain setting. This study demonstrates the capabilities of low‐cost, low‐mass, and low‐power GNSS‐R receivers ahead of their launch on the NASA Cyclone GNSS (CYGNSS) constellation in 2016.

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“…It has the disadvantage that the cross correlation has a poorer SNR, but the advantage that the 978-1 -4799-1114-1/ 13/$3 1 .00 ©20 13 IEEE whole bandwidth can be used, and that it can be applied to any kind of signals (e.g. TV or radio transmitters) [10,II]. 3.…”

Section: B Te Chniquesmentioning

confidence: 99%

Land monitoring using GNSS-R techniques: A review of recent advances

Camps

Rodriguez-Alvarez

Valencia

et al. 2013

2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS

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Soil moisture is required to improve meteorological and climate predictions. Global soil moisture maps are nowadays produced daily from SMOS satellite data, with a basic spatial resolution of -50 km. Recently, using data fu sion techniques between SMOS and MODIS data, an operational service has been implemented at the SMOS Barcelona Expert Center to downscale SMOS data down to 1 km over the Iberian peninsula [11. However, despite SMOS operates in the passive microwave "protected" band from 1400 to 1427 MHz, radio fre quency interference may degrade the quality of the soil moisture (and sea salinity) retrievals or even prevent them [21. Signals of opportunity transmitted from Global Navigation Satellite Systems (GNSS) can be used for soil moisture, vegetation, snow, water level. .. monitoring after reflection (GNSS-R) on the Earth's surface. In principle, eventhough these signals can also be jammed, their structure and the way they are processed, makes them more robust in front of radio-frequency interference, while at the same time -in principle-can achieve also a better spatial resolution. In this work, the few different GNSS-R techniques are first revised, including their pros and cons. Then a few applications are revised, with special emphasis -but not exclusively-in those in which the UPC Remote Sensing Lab has been working.

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The proof of concept for 3-cm Altimetry using the Paris Interferometric Technique

Cited by 11 publications

References 3 publications

GNSS-R Derived Centimetric Sea Topography: An Airborne Experiment Demonstration

GNSS-R Derived Centimetric Sea Topography: An Airborne Experiment Demonstration

Spaceborne GNSS reflectometry for ocean winds: First results from the UK TechDemoSat‐1 mission

Land monitoring using GNSS-R techniques: A review of recent advances

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