SIRAL: the radar altimeter for CryoSat mission, under development

Rey, L.; Chateau-Thierry, P. de; Phalippou, L.; Mavrocordatos, C.; Francis, R.

doi:10.1109/igarss.2002.1026248

Cited by 6 publications

(1 citation statement)

References 3 publications

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“…During the last 20 years, a new paradigm for radar altimeter instruments has been designed, implemented, and exploited to observe the ocean and ice environment involving an accurate estimate of the range of the sensor above the Earth surface. High pulse repetition frequency (PRF) altimeter instruments are able to transmit pulses at a high pulse repetition frequency simultaneously guaranteeing their coherence [1]. Such instruments allow to exploit the Delay/Doppler (D/D) processing concept [2,3], which, by coherent summation of pulses within a burst, achieves an improvement in terms of along-track resolution and of Equivalent Number of Looks (ENL) compared to conventional pulse-limited altimeters.…”

Section: Introductionmentioning

confidence: 99%

2D Frequency Domain Fully Focused SAR Processing for High PRF Radar Altimeters

Guccione

Scagliola²,

Giudici³

2018

Remote Sensing

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Fully-focusing of radar altimeters is a recent concept that has been introduced to allow further improvement of along-track resolution in high pulse repetition frequency (PRF) radar altimeters. The straight potentiality of this new perspective reflects into a more accurate estimation of geophysical parameters in some applications such as sea-ice observation. However, as documented in a recent paper, such capability leaves unsolved the problem of the high computational effort required. In this paper, we face the problem of adapting for altimeters the Omega-Kappa SAR focusing algorithm that is performed in the two-dimensional wavenumber domain, accounting for the difference existing between SAR and altimeter from geometry (looking and swath width) and instrument (echoes are deramped onboard on receiving) point of view. Simulations and an application using in-orbit data show the effectiveness of the proposed approach and the highly reduced computational effort.

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Section: Introductionmentioning

confidence: 99%

2D Frequency Domain Fully Focused SAR Processing for High PRF Radar Altimeters

Guccione

Scagliola²,

Giudici³

2018

Remote Sensing

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The CryoSat space segment: definition, design and predicted performance

Rostan¹,

Mallow²

IEEE International Geoscience and Remote Sensing Symposium

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Siral the radar altimeter for the cryosat mission, pre-launch performances

Rey¹,

Chateau-Thierry²,

Phalippou³

et al.

IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477)

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The development phase of the SAR Interferometer Radar Altimeter (SIRAL) is in progress in Alcatel Space and during year 2003 the Engineering and the Flight Models will be tested before delivery to the Mission Prime ASTRIUM GmbH. This ESA mission, planned for 2004, will be used to estimate -on a global scale-the fluctuations in mass of sea-ice and landice. This paper gives a detailed presentation of the microwave and processing units developed, followed by a survey of the pre-launch performances.Figure 1 : SIRAL Electronic boxes Engineering Model

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SIRAL: the radar altimeter for CryoSat mission, under development

Cited by 6 publications

References 3 publications

2D Frequency Domain Fully Focused SAR Processing for High PRF Radar Altimeters

2D Frequency Domain Fully Focused SAR Processing for High PRF Radar Altimeters

The CryoSat space segment: definition, design and predicted performance

Siral the radar altimeter for the cryosat mission, pre-launch performances

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