RA-2 radar altimeter: instrument EM model performance results

Zelli, C.; Provvedi, F.; Buscaglione, F.; Croci, R.

doi:10.1109/igarss.1997.615786

Cited by 3 publications

(1 citation statement)

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“…The JASON-1 [7][8] altimeter launched on Dec. 7,2001, is the first follow-on to the highly successful TOPEX/Poseidon mission. The RA-2 [9][10] altimeter in the ENVISAT-1 satellite launched on Feb. 28, 2002, can work not only for oceanic monitoring but also for land monitoring with a innovative height tracker developed. The altimeters since Seasat-A can measure the surface significant wave heigth (SWH) and surface wind speed as well as the heigth above the surface.…”

Section: Introductionmentioning

confidence: 99%

Design and preliminary experiment of China imaging altimeter

et al. 2003

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The design of the China Imaging ALTimeter (CIALT) and the flight experiment of its airborne model are presented in this paper. The system is aimed for providing observation measure for both oceanic applications and continental topographic mapping in the future. The motivation of this project is to develop a three dimensional imager fitted for small satellites with small volume, mass and power consumption. An experimental airborne model of the CIALT has been developed for verifying the design concept. The CIALT integrates three techniques together, i.e. the height measurement and tracking technique of traditional radar altimeter used for ocean applications, the synthetic aperture technique and the interferometric technique. A robust height tracker has been designed( for meeting the requirements of both oceanic surfaces and continental surfaces (including surfaces of ice continent). The synthetic aperture technique is used for achieving a higher azimuthal resolution along the cross range direction compared with that of a traditional altimeter. The interferometric technique is used for retrieving the height information corresponding to each image pixel and for boresight angle correction of the antennas, which is crucial for accurate height measurement. The CIALT is different from other proposed imaging altimeters, such as SAR altimeter and scanning altimeter, in which no height tracker is involved. Some key technologies regarding the development of imaging altimeter are addressed, such as the antenna design, the transmitter, the receiver and the robust tracking algorithm.

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Section: Introductionmentioning

confidence: 99%