An Echo Model for Big Antenna Mispointing Angle and Its Application in HY-2A Satellite Radar Altimeter

doi:10.3969/j.issn.0372-2112.2013.09.027

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ACTA ELECTRONICA SINICA ›› 2013, Vol. 41 ›› Issue (9) : 1836-1841. DOI: 10.3969/j.issn.0372-2112.2013.09.027

An Echo Model for Big Antenna Mispointing Angle and Its Application in HY-2A Satellite Radar Altimeter

WANG Lei^1,2, XU Ke¹, LIU Peng^1,2, XU Xi-yu¹

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Abstract

The main problem of the conventional radar altimeter echo model for big antenna mispointing angle is analyzed,and then an echo model containing the sea surface skewness coefficient is derived.This echo model can be used for retracking the echo wave when the antenna mispointing angle is big.Finally,the model is used to process the data of the HY-2A radar altimeter during the stage of adjusting satellite attitude,and the results are compared with the measurements of the buoys of NDBC(National Data Buoy Center).It shows that the model can give more accurate results.

Key words

radar altimeter / echo model / mispointing angle / skewness coefficient / HY-2A / retracking

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WANG Lei, XU Ke, LIU Peng, XU Xi-yu. An Echo Model for Big Antenna Mispointing Angle and Its Application in HY-2A Satellite Radar Altimeter[J]. Acta Electronica Sinica, 2013, 41(9): 1836-1841. https://doi.org/10.3969/j.issn.0372-2112.2013.09.027

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