Title :
Analysis of Decorrelation Caused by Mast Oscillation in Spaceborne Dual-Antenna InSAR
Author :
Tang, Xiaoqing ; Wu, YiRong ; Wang, Yanping ; Peng, Hailiang
Author_Institution :
Nat. Key Lab. of Microwave Imaging Technol.
Abstract :
The antenna mast oscillation in the spaceborne dual-antenna interferometric SAR system will directly degrade the height accuracy. The decorrelation caused by mast oscillation is attributed to the relative shift and the beam centre shift of the outboard antenna. The transfer function of InSAR system and the coherence coefficient considering the effects of mast oscillation are derived. Theoretical and numerical analyses show the influence of amplitude and frequency of mast oscillation oh the coherence of image pair. Finally, the validity of the analysis is demonstrated by the simulation results
Keywords :
decorrelation; radar antennas; spaceborne radar; synthetic aperture radar; transfer functions; decorrelation analysis; mast oscillation; spaceborne dual-antenna InSAR; synthetic aperture radar; transfer function; Antenna measurements; Antenna theory; Azimuth; Decorrelation; Geometry; Image analysis; Microwave antennas; Spaceborne radar; Synthetic aperture radar interferometry; Transfer functions; decorrelation; mast oscillation; spaceborne dual-antenna InSAR;
Conference_Titel :
Radar, 2006. CIE '06. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9582-4
Electronic_ISBN :
0-7803-9583-2
DOI :
10.1109/ICR.2006.343289
