Method of Obtaining Magnetic Object Location Based on Geomagnetic Field Intensity
Ming Wang 1,Chong Kang2, Liming Fan 1, Xiaojun Zhang 2
(1.College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China;2.Science College, Harbin Engineering University, Harbin 150001, China)
Abstract:
It is very important to determine the magnetic object location using the magnetic anomaly. This paper presents a method for determined the magnetic object location using the geomagnetic field intensity. The magnetic object center position can be obtained by the amplitude of the analytic signal (AS) of geomagnetic total intensity. The vertical distance can be obtained by the value of magnetic anomaly on center position. But the vertical distance from measuring plane to magnetic object is not relatively precious because of not eliminating the geomagnetic normal field in the calculation process. The method of modeling geomagnetic normal field in small space is proposed based on Taylor polynomial. The impact of geomagnetic variation field for the precious of model is analyzed. Through the measured data and the model data, total intensity magnetic anomaly on the measuring plane is obtained which is used for calculating the vertical distance of magnetic object by calculating model. The experimental tests have been conducted on open field on the campus of Harbin Engineering University. The results show that the calculated results and real values match perfectly using this method.
Key words: magnetic object detection geomagnetic field model AS approach Taylor polynomial least squared estimation
DOI:10.11916/j.issn.1005-9113.2015.01.018
Clc Number:P318.4
Fund:
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Method of Obtaining Magnetic Object Location Based on Geomagnetic Field Intensity
本站小编 哈尔滨工业大学/2019-10-23
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