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针对单一指标评价地磁图适配性不全面的缺陷,提出了一种基于多指标融合的综合评价方法。该方法综合考虑标准差、粗糙度、相关系数、熵、累积梯度5个指标。针对传统的模糊评判方法确定指标权重客观性差问题,采用熵技术修正各指标权重,求解出地磁图的综合评价值。利用传统的MSD和MAD匹配算法进行仿真实验,结果表明:该方法得到的评价值能够全面、合理地评价地磁图的适配性,综合评价值越大,匹配概率越高,显示了二者之间良好的一致性。
Aiming at the flaw that a single index evaluates the incompleteness of the geomagnetic map, a comprehensive evaluation method based on multi-index fusion is proposed. The method takes into account the five indicators of standard deviation, roughness, correlation coefficient, entropy and cumulative gradient. Aiming at the problem of poor objectivity of indicator weight by traditional fuzzy evaluation method, the entropy technique is used to correct the weight of each index and the comprehensive evaluation value of the geomagnetic graph is obtained. The traditional MSD and MAD matching algorithm are used to simulate the experiment. The results show that the evaluation value obtained by this method can comprehensively and rationally evaluate the suitability of the geomagnetic map. The larger the comprehensive evaluation value is, the higher the matching probability is. Good consistency between.