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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/65867

    Title: 新穎的混合式角反射器法於全極化合成孔徑雷達校正;Improvement of Hybrid Polarimetric Calibration Technique for SAR Using Corner Reflectors
    Authors: 陳憲偉;Chen,Shian-wei
    Contributors: 遙測科技碩士學位學程
    Keywords: 雷達;全極化;全極化校正;radar;polarimetric;polarimetric calibration
    Date: 2014-07-25
    Issue Date: 2014-10-15 17:16:09 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 全極化合成孔徑雷達系統已經被廣泛的運用在地表分類、物理參數反演上,特別是在比較兩幅影像時、或者是比較影像與理論時,極化校正非常重要。
    ;Fully polarimetric synthetic aperture radar (SAR) has wide applications for terrain classification, land-use and physical parameters retrieval, etc. Calibration of quad-polarized SAR data is essential for understanding actual polarimetric signatures, especially comparing data between scenes, or comparing observation with theory.
    The proposed calibration method relies only on the characteristics of the calibration targets and requires no assumptions regarding scene statistics and radar characteristics. It allows the correction of polarimetric distortions of the radar system using only three different kinds of the following calibration corner reflectors: trihedral, dihedral, 22.5degree and 45 degree rotated dihedral. Validation of the proposed method is made by using chamber measurements and airborne L-band Pi-SAR data. The experimental results show that the amplitude error can be reduced to as small as 0.5dB, while the phase error is less than 5 degrees.
    Appears in Collections:[遙測科技碩士學位學程] 博碩士論文

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