A High-Precision Magnetic Induction Through-the-Earth Positioning Scheme

Tian, Wenlong; Yang, Wei; Shao, Xiaotao

doi:10.1109/access.2021.3061603

Cited by 1 publication

(5 citation statements)

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“…To obtain the components of 1 Qi B , we decompose 1 Qi B in the horizontal direction and the vertical direction. As shown in [20], the values of the horizontal component 1…”

Section: The Dual-frequency Magnetic Induction Positioning Modelmentioning

confidence: 99%

“…In (8), both  and  can affect the correspondence between r and Qi B . The value of  has been obtained in [20] as…”

Section: Determine the Transceiver Distancementioning

confidence: 99%

“…The noise level of LEMI-30 is less than 0.1pT/ Hz . By using the noise reduction method in [20], the noise amplitude can be reduced to . The noise will lead to the direction deviation and amplitude error of the positioning signal.…”

Section: A the Simulation Of The Positioning Accuracymentioning

confidence: 99%

“…By intersecting the positioning signal vectors at two locations, Powell determined the position of the vertical projection of the transmitter coil on the ground. Tian [20] further discovered the analytical relationship between the direction of the positioning signal vector and the transmitter depth. After measuring the direction of the positioning signal vector, Tian [20] obtained the transmitter depth.…”

Section: Introductionmentioning

confidence: 99%

“…Tian [20] further discovered the analytical relationship between the direction of the positioning signal vector and the transmitter depth. After measuring the direction of the positioning signal vector, Tian [20] obtained the transmitter depth. The direction method does not depend on the path loss of the positioning signal.…”

Section: Introductionmentioning

confidence: 99%

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A High-Precision Dual-Frequency Magnetic Induction Through-the-Earth Positioning Method

2021

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To achieve the high-precision through-the-earth positioning in mine rescue, we propose a dual-frequency magnetic induction positioning method. The dual-frequency transmitter underground is a loop energized coil. The receiver on the ground is a three-axis magnetic core coil. We first carry on the algebraic transformation to the expression of the dual-frequency positioning signal, and obtain the transceiver distance function that is not affected by the layered earth conductivity. Then, through the tilt angle of the receiver and the rotation matrices, we correct the receiver tilt. By the direction of the geomagnetic field, we correct the direction deviation of the receiver. Finally, we obtain the threedimensional coordinates of the transmitter by decomposition of the transceiver distance. The analysis and simulation results are as follows. The dual-frequency positioning method eliminates the positioning error caused by the path loss of the stratified earth media. The rotation matrices correct the error caused by the receiver tilt. When the receiver is close to the top of the transmitter, the positioning error can be reduced. By configuring proper transmitter parameters, we can maintain a balance between transmitter size and rescue efficiency.INDEX TERMS high-precision, dual-frequency, Magnetic induction, positioning, through-the-earth.

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“…To obtain the components of 1 Qi B , we decompose 1 Qi B in the horizontal direction and the vertical direction. As shown in [20], the values of the horizontal component 1…”

Section: The Dual-frequency Magnetic Induction Positioning Modelmentioning

confidence: 99%

“…In (8), both  and  can affect the correspondence between r and Qi B . The value of  has been obtained in [20] as…”

Section: Determine the Transceiver Distancementioning

confidence: 99%

Section: A the Simulation Of The Positioning Accuracymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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