A Digital Positioning Method for Rotating Magnetic Beacons Based on Simulated Annealing Algorithm
A simulated annealing algorithm and digital positioning technology, which can be used in ground navigation and other directions to solve the problems of limited service range, large noise interference, and low accuracy, and achieve high-precision positioning and orientation services, efficient and reasonable algorithms, and high positioning accuracy.
Active Publication Date: 2022-02-01
HARBIN INST OF TECH
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Problems solved by technology
If the terminal is in a large building or indoor environment, the received satellite signal is too weak, and the positioning accuracy will be reduced
(2) WiFi positioning technology: high energy consumption, and limited by the service range, no direction, speed and other data, can not navigate
(3) Zigbee positioning technology: only for dedicated network
Low data rate, not suitable for high transfer rate applications
(4) Bluetooth positioning technology: in a complex space environment, the stability is slightly poor, and it is greatly disturbed by noise
(5) The invention patent with the application publication number CN105928511A discloses a positioning and orientation method based on magnetic beacons, the technical method is relatively complicated and the accuracy is not high
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Embodiment 1
[0045] In this embodiment, a simulated annealing algorithm is used to solve the minimum value of the objective function, and then obtain the method of the target location. In practical applications, two coils fed with sinusoidal currents of different frequencies generate a magnetic field, and the magnetic field strength information obtained by measuring the magnetic field strength information obtained through the fluxgate placed on the target object is then compared with the standard magnetic field strength to obtain the true location of the object. Location.
[0046] like figure 1 As shown, the overall algorithm flow of the system is:
[0047] (1), input the measured magnetic field strength information
[0048] (2), select the initial area (initialize a point)
[0049] (3), simulated annealing algorithm to process data
[0050] (4), output location information
[0051] Among them, the relevant parameters need to be set, and the parameters that need to be set are as follo...
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The invention provides a digital positioning method for a rotating magnetic beacon based on a simulated annealing algorithm, and belongs to the technical field of positioning and orientation methods. The invention solves the minimum value of the objective function through a simulated annealing algorithm, and then obtains the location of the objective. In practical applications, two coils fed with sinusoidal currents of different frequencies generate a magnetic field, and the magnetic field strength information obtained by measuring the magnetic field strength information obtained through the fluxgate placed on the target object is then compared with the standard magnetic field strength to obtain the true location of the object. Location. The present invention can still ensure stable and high-precision positioning and orientation services in some special environments, especially in underground, underwater, indoor, urban or mountain canyon areas, and has the advantages of simple device, efficient and reasonable algorithm, high positioning accuracy, It is characterized by good penetration and is not directly affected by adverse weather conditions and diurnal changes.
Description
technical field [0001] The invention relates to a digital positioning method for a rotating magnetic beacon based on a simulated annealing algorithm, and belongs to the technical field of positioning and orientation methods. Background technique [0002] With the rapid development of science and technology, people's demand for location-based services is increasing day by day. Several existing main positioning methods are as follows: (1) GPS positioning technology: requires a built-in satellite signal receiving module in the terminal, and the positioning accuracy is greatly affected by the environment in which the terminal is located. If the terminal is in a large building or indoor environment, the received satellite signal is too weak, and the positioning accuracy will be reduced. (2) WiFi positioning technology: It consumes a lot of energy and is limited by the service range. There is no data such as direction and speed, and it cannot navigate. (3) Zigbee positioning tec...
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IPC IPC(8): G01C21/04
CPCG01C21/04
Inventor 夏红伟刘超越马广程王常虹王冠解伟男
Owner HARBIN INST OF TECH