基于回波数据的机载双天线InSAR运动补偿

Abstract

Abstract: Usually,the phase error in the airborne dual-antenna InSAR interferograms is compensated using the POS data.However,the relative motion of two antennas can not be measured precisely in the case of non-rigid baseline dual-antenna InSAR system.In such case,a phase compensation method without measurement data is necessary.The raw data-based phase compensation of airborne dual-antenna InSAR interferograms with the spectum slicing method is studied.Based on the in-depth analysis of the relation between interferometric phase errors and motion errors,the principle and applicability of this approach are presented.The influence on the compensation accuracy and the principles of several parameters choices are analyzed.The approach is refined based on the range-variant model,and the flow chart is presented.Finally,the phase compensation result of airborne dual-antenna InSAR using this approach is demonstrateds,which proves that this raw data-based algorithm can proportionably substitute the use of POS data.

CLC Number:

TN951

TANG Xiao-qing, XIANG Mao-sheng, WU Yi-rong. Raw data-based motion compensation of airborne dual-antenna InSAR[J]. Journal of Systems Engineering and Electronics, 2009, 31(10): 2311-2316.

References

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Raw data-based motion compensation of airborne dual-antenna InSAR

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