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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/64938

    Title: 基於零相關門檻之全球導航衛星系統快速載波相位求解;Fast Carrier-Phase Resolution in GNSS Based on ZEro-correlation Transformation/Threshold for Ambiguity-resolution
    Authors: 陳揚仁;Chen,Yang-Zen
    Contributors: 土木工程學系
    Keywords: 相位模稜;解相關;零相關;門檻域;部分模稜求解;phase ambiguity;decorrelation;zero correlation;threshold domain;partial ambiguity resolution
    Date: 2014-08-14
    Issue Date: 2014-10-15 14:34:46 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 高精度全球導航衛星系統運用的關鍵在於如何正確及有效率地求解整數相位模稜。
    ;The key point of accurate and precise application of Global Navigation Satellite Systems is how to obtain integer carrier phase ambiguity correctly and efficiently.
    One of the ways to solve the ambiguity resolution problem is ambiguity searching technique with an ambiguity decorrelation technique. Traditionally, an integer-valued limitation of the transformation matrix of decorrelation technique ensures the integer characteristic of candidates existing after the inverse transformation, but it also makes the decorrelation imperfect.
    A zero correlation domain or a complete diagonalization covariance matrix could be obtained by the using float transformation matrix. A space in this domain will be used as a threshold, hence the zero correlation domain is called threshold domain. The number of ambiguity candidates based on integer transformation could be reduced through the proposed ZETA method.
    ZETA might reject all of candidates and make the ambiguity resolution being no solution. In this research, the partial ambiguity resolution is used to cope with this situation. Partial ambiguity resolution allows some of the resolved of ambiguities to be float-valued ones. A candidate will be easier to pass the threshold with some of ambiguities being solved as float solutions.
    The experiments in this paper prove that the method could make the ambiguity resolution become more efficient without decreasing the accuracy. The success rate could also be improved by proposed method.
    Appears in Collections:[土木工程研究所] 博碩士論文

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