基于不变矩的微动目标二维平流层ISAR成像算法

doi:10.3969/j.issn.1000-436x.2013.08.009

Abstract

Abstract:

To resolve the micromotion in the HAPS(high altitude platform station) ISAR system,the invariant moment method for ISAR imaging with micro parts was proposed.Firstly,invariant moment tool was applied to classify the echoes of different sub-aperture,and then the sub-aperture echoes reducing the quality of image was separated.Finally the remaining echoes were used to do sub-aperture splicing imaging.From the simulation results,the algorithm is proved to be simple and can improve the quality of ISAR image obviously.

Key words: ISAR, imaging, sub-aperture, simulation, HAPS

Zhao-qun QI,Xiao-jun JING,Si-qing YOU,Hai-bin SUN. Application of invariant moment method for HAPS ISAR imaging with micro parts[J]. Journal on Communications, 2013, 34(8): 70-75.

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仿真参数	符号	值
平台高度/km	h	15
信号载频/GHz	f	10
带宽/MHz	B	400
脉冲宽度/μs	μ	250
脉冲重复频率/Hz	PRF	800
子孔径个数	n	8
目标飞行速度/m·s^-1	v	150

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Application of invariant moment method for HAPS ISAR imaging with micro parts

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