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中文摘要：
依据干涉图零中频矢量滤波经验，设计了多波段InSAR干涉图的差分滤波相位解缠方法。该方法将较短波长干涉图与较长波长干涉图的解缠结果进行差分处理，以降低干涉条纹频率，提高滤波效果和相位解缠性能，从而以较长波长干涉图的解缠结果指导较短波长干涉图的相位解缠。充分利用不同波段干涉图之间的互补相位信息，提高相位解缠的可靠性和解缠精度。采用由DEM仿真的多波段干涉图进行了相位解缠试验，得到了满意的解缠结果，验证了该解缠方法的有效性。
英文摘要：
intermed ：A new p ate frequ wavelength to the hase unwrapping algorithm with difference filter for multi-band InSAR was designed by taking zero encyvector filtering of interferogram for reference. It differences the interferogram with shorter one with longer wavelength to reduce the frequencies of fringes, as can improve the effects of filtering and phase unwrapping, it unwraps the phases with shorter wavelength based on the unwrapped phases with longer wavelength. All the phases in interferograms with different bands are used in phase unwrapping, so the reliability and the precision of phase unwrapping are improved. The simulated multi-band interferogramsfrom DEM were applied in phase unwrapping experiments. The unwrapped phases were satisfying, as validated the proposed phase unwrapping algorithm.
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