Poseidon-2 Radar Altimeter Design and Results of In-Flight Performances Special Issue: Jason-1 Calibration/Validation

Carayon, G.; Steunou, N.; Courriere, J.; Thibaut, P.

doi:10.1080/714044516

Cited by 21 publications

(3 citation statements)

References 1 publication

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“…The Jason-1 payload is composed of the Poseidon-2 altimeter operating at Ku (13.575 GHz) and C (5.3 GHz) bands, a microwave radiometer, and a triple system for precise orbit determination [26] Jason-1 orbits at an average altitude of 1336 km, with an inclination of 66 • , on a 10-day repeating cycle. Observations along the ground track of all ocean and continental surfaces from these altimeters are collected from 66 • N to 66 • S.…”

Section: Jason-1mentioning

confidence: 99%

“…RA-2 was a nadir-looking pulse-limited radar altimeter operating at two frequencies at the Ku (13.575 GHz), as ERS-1 and 2, and S (3.2 GHz) bands. The goal was to collect radar altimetry data over ocean, land, and ice caps [26,28] Envisat remained on its nominal orbit until October 2010 and its mission ended 8 April 2012. RA-2 stopped operating correctly at S-band in January 2008.…”

Section: Envisatmentioning

confidence: 99%

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Multi-Satellite Altimeter Validation along the French Atlantic Coast in the Southern Bay of Biscay from ERS-2 to SARAL

Frappart

Darrozes

et al. 2018

Remote Sensing

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Monitoring changes in coastal sea levels is necessary given the impacts of climate change. Information on the sea level and its changes are important parameters in connection to climate change processes. In this study, radar altimetry data from successive satellite missions, European Remote Sensing-2 (ERS-2), Jason-1, Envisat, Jason-2, and Satellite with ARgos and ALtiKa (SARAL), were used to measure sea surface heights (SSH). Altimetry-derived SSH was validated for the southern Bay of Biscay, using records from seven tide gauges located along the French Atlantic coast. More detailed comparisons were performed at La Rochelle, as this was the only tide gauge whose records covered the entire observation period for the different radar altimetry missions. The results of the comparison between the altimetry-based and in-situ SSH, recorded from zero to five kilometers away from the coast, had root mean square errors (RMSE) ranging from 0.08 m to 0.21 m, 0.17 m to 0.34 m, 0.1 m to 0.29 m, 0.18 m to 0.9 m, and 0.22 m to 0.89 m for SARAL, Jason-2, Jason-1, ENVISAT, and ERS-2, respectively. Comparing the missions on the same orbit, ENVISAT had better results than ERS-2, which can be accounted for by the improvements in the sensor mode of operation, whereas the better results obtained using SARAL are related to the first-time use of the Ka-band for an altimetry sensor. For Jason-1 and Jason-2, improvements were found in the ocean retracking algorithm (MLE-4 against MLE-3), and also in the bi-frequency ionosphere and radiometer wet troposphere corrections. Close to the shore, the use of model-based ionosphere (GIM) and wet troposphere (ECMWF) corrections, as applied to land surfaces, reduced the error on the SSH estimates.

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Section: Jason-1mentioning

confidence: 99%

Section: Envisatmentioning

confidence: 99%

Multi-Satellite Altimeter Validation along the French Atlantic Coast in the Southern Bay of Biscay from ERS-2 to SARAL

Frappart

Darrozes

et al. 2018

Remote Sensing

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show abstract

“…The altimetry data used in this study are the following high frequency parameters available at (1) (Carayon et al, 2003) (2) (Desjonquères et al, 2010) (3) (Levrini et al, 1984) (4) (Benveniste et al, 2001) (5) (Steunou et al, 2015) * on the nominal orbit ** interlaced: 3 Ku -1C -3 Ku + S-band data are flagged after January 2008 4. Methods…”

Section: Altimetry Datasetsmentioning

confidence: 99%