形态滤波在地磁测量信号处理中的应用研究  

Application of Morphological Filter in Processing Geomagnetic Signals

作　　者：李季[1] 张琦[1] 潘孟春[1] 罗飞路[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,湖南长沙410073

出　　处：《测试技术学报》2012年第6期533-537,共5页Journal of Test and Measurement Technology

摘　　要：获得精确的地磁场测量值是地磁导航技术应用的关键.针对磁力仪测量信号中存在的随机噪声与脉冲等干扰,提出将数学形态学理论应用于信号的预处理,并根据信号的特点,设计由不同结构元素组成的广义组合形态滤波器,通过仿真对滤波器的性能进行了研究,并将其应用到实际测量的地磁数据中进行处理,将结果与传统滤波方法进行对比,验证了本文提出的方法的有效性.仿真与实验结果表明,形态滤波算法简单、效果好,适于在地磁测量信号处理中的应用.Getting accurate measurements is one of the key technologies for the application of geomagnetic navigation. In order to get rid of the interferences of random noise and pulses in the measurements of the magnetometer, this paper presented a new method based on the mathematical morphological theory. According to the characteristics of the signal, we designed a generalized morphological filter composed of different kinds of structure elements. Simulation was made to study the characteristics of the method. A group of experimental data was also processed with the presented method to validate its effect. The results of both the simulation and the experiment show that morphological filter is a simple and effective method which can be applied to the preprocessing of geomagnetic measurements.

关 键 词：地磁导航 广义形态滤波器 地磁信号 预处理 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]