| 模糊决策理论的地磁图适配性分析 |
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| 引用本文： | 种洋,柴洪洲,刘帆,王旭,杜祯强.模糊决策理论的地磁图适配性分析[J].武汉大学学报(信息科学版),2021(1). |
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| 作者姓名： | 种洋 柴洪洲 刘帆 王旭 杜祯强 |
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| 作者单位： | 信息工程大学地理空间信息学院;军事科学院战争研究院;地理信息工程国家重点实验室;61365部队 |
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| 基金项目： | 国家自然科学基金(41774021,41774037,41904039,42074014);地理信息工程国家重点实验室开放基金(SKLGIE 2017-M-2-6)。 |
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| 摘 要： | 传统地磁图适配性分析仅将单一特征参数作为评价指标,从而导致分析结果不全面。针对此问题,提出了一种基于模糊决策理论的地磁图适配性分析方法。首先采用地磁标准差、粗糙度、相关系数、坡度标准差及地磁信息熵等5个主要特征参数作为模糊指标进行加权分析,得到综合评价值以评定候选区适配性。然后基于地磁异常的无迹卡尔曼滤波算法,选取中国南海部分海域的全球地磁异常格网数据作为地磁异常基准图进行仿真实验。实验结果表明,该方法具有较高的可靠性,综合评价值可作为地磁图适配性分析的定量依据,并能从一定程度上解决单一特征参数评价不全面的问题,提高水下自主航行器的导航精度。
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| 关 键 词： | 模糊决策理论 地磁匹配导航 适配性 特征参数 |
Suitability Analysis of Geomagnetic Map Based on Fuzzy Decision Theory |
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| CHONG Yang,CHAI Hongzhou,LIU Fan,WANG Xu,DU Zhenqiang.Suitability Analysis of Geomagnetic Map Based on Fuzzy Decision Theory[J].Geomatics and Information Science of Wuhan University,2021(1). |
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| Authors: | CHONG Yang CHAI Hongzhou LIU Fan WANG Xu DU Zhenqiang |
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| Institution: | (Institute of Geospatial Information,Information Engineering University,Zhengzhou 450001,China;Institute of War,Academy of Military Sciences,Beijing 100091,China;State Key Laboratory of Geo-Information Engineering,Xi'an 710054,China;Troops 61365,Tianjin 300143,China) |
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| Abstract: | In order to solve the problem that the traditional suitability analysis of geomagnetic map only uses a single characteristic parameter as the evaluation index,which results in incomplete analysis results,a method of the suitability analysis of geomagnetic map based on fuzzy decision theory is proposed.Firstly,five main characteristic parameters,such as geomagnetic standard deviation,roughness,correlation coefficient,slope standard deviation and geomagnetic information entropy,are used as fuzzy indexes for weighted analysis,and the comprehensive evaluation value is obtained to evaluate the suitability of candidate areas.Then,based on the unscented Kalman filtering algorithm of geomagnetic anomaly,the earth magnetic anomaly grid 2(EMAG2) model of part of the south China sea is selected as the geomagnetic anomaly reference map for the simulation experiment.The experimental results show that our proposed method has high reliability,and the comprehensive evaluation value can be used as a quantitative basis for the suitability analysis of geomagnetic map,and the optimal matching position can be obtained. |
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| Keywords: | fuzzy decision theory geomagnetic matching navigation suitability characteristic parameters |
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