发明名称 |
THREE AXIS MAGNETOMETER SENSOR FIELD ALIGNMENT AND REGISTRATION |
摘要 |
An alignment process is applied to each sensor (12a-12n) of an array (12) of three axis magnetic sensors to electronically align the three axes of each sensor (12a-12n) after the array (12) has been deployed. The alignment process compensates for each sensor (12a-12n) not being aligned perfectly with the earth's N-S, E-W and vertical magnetic field components. A field registration process is applied to each sensor (12a-12n) of the array that uses a dipole moment detection and localization process and the alignment process combined with a known calibrated dipole source (13) to define the shape of the array (12). The present invention improves the performance of the array of sensors (12a-12n) in detecting magnetic anomalies by digitally compensating for sensor-to-sensor nonalignment and magnetic interferers within interfering range. The alignment process electronically aligns the three axes of each of the sensors (12a-12n) to gain maximum performance from the sensor array (12). Using digital signal processing techniques reduces the physical deployment requirements on the sensors (12a-12n)and their relative positions. The alignment process allows the use of three axisvector magnetometers in a distributed field with out having to lay each sensor (12a-12n) in perfect alignment with the earth's three magnetic axis. This simplifies the deployment requirements and allows for maximizing the system performance.
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申请公布号 |
CA2061310(C) |
申请公布日期 |
1998.04.14 |
申请号 |
CA19922061310 |
申请日期 |
1992.02.17 |
申请人 |
HUGHES AIRCRAFT COMPANY |
发明人 |
LO, ALLEN K.;EATON, WILBUR W., JR.;BREED, BEN R. |
分类号 |
G01R33/02;G01V3/08;(IPC1-7):G01R33/02;G01R35/00 |
主分类号 |
G01R33/02 |
代理机构 |
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