Ka频段合成孔径雷达高度计机载数据处理

doi:10.12305/j.issn.1001-506X.2022.09.13

Abstract

Abstract:

Radar altimeter is an important ocean microwave remote sensor. Using radar altimeter to observe the dynamic height of the sea surface is an effective means for global-scale ocean monitoring. In recent years, the radar altimeter has gradually developed from the real aperture mode to the synthetic aperture mode and from the Ku-band to the Ka-band. The accuracy and resolution of the observation have been significantly improved. This paper firstly studies the complete flow scheme of the data processing method of Ka-band synthetic aperture radar altimeter, including echo preprocessing, improved echo model, and echo re-tracking. Then, based on the first domestic Ka-band sea surface airborne experiment data, parameter retrieval is carried out and verified using the mean sea surface height model data. The data processing result proves the correctness of the data processing method in this paper.

Key words: Ka-band, synthetic aperture, radar altimeter, airborne experiment, data processing

CLC Number:

TP75

Xiaonan LIU, Kun WANG, Hanwei SUN, Yaobing LU. Ka-band SAR altimeter airborne data processing[J]. Systems Engineering and Electronics, 2022, 44(9): 2800-2808.

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参数	数值
载频/GHz	35
脉宽/μs	20
带宽/MHz	900
采样率/GHz	1.2
PRF/kHz	5
飞行高度/km	3.3
飞行速度/(m/s)	80
飞行距离/km	14

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Ka-band SAR altimeter airborne data processing

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