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Error compensation method of wireless positioning system

A wireless positioning system and error compensation technology, which is applied in the field of error compensation, can solve the problems of system positioning accuracy changes, inability to measure, poor environmental adaptability of wireless positioning systems, etc., and achieve the effect of improving system positioning accuracy

Inactive Publication Date: 2012-09-26
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

At present, the error compensation methods of wireless positioning system can only improve the positioning accuracy of wireless positioning system under specific conditions, and lack of consideration of some influencing factors that cannot be measured by themselves and the environment changes with time. Therefore, the environment of wireless positioning system Poor self-adaptive ability, system positioning accuracy changes with changes in the environment

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  • Error compensation method of wireless positioning system
  • Error compensation method of wireless positioning system
  • Error compensation method of wireless positioning system

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Embodiment Construction

[0048] In order to further explain the technical means and effects adopted by the present invention to achieve the intended purpose of the invention, the specific implementation and working principle of the error compensation method of the wireless positioning system proposed according to the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. illustrate.

[0049] Depend on figure 1 It can be seen that the error compensation method of the wireless positioning system provided by the present invention includes the following steps:

[0050] Step 1: By analyzing the influencing factors that affect the positioning accuracy of the wireless positioning system, and verifying the influencing factors through experiments, a set of influencing factors V is obtained F :={x 1 , x 2 , x 3 ,...,x P}; Among them, the influencing factors are environmental factors, including: system ambient temperature, ambient humidit...

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Abstract

The invention relates to the technical field of error compensation, and discloses an error compensation method of a wireless positioning system. The method comprises the following steps of: through fully considering the characteristic that the method in the prior art is easily affected by positioning scenes, environment factors and the like, on-line acquiring system positioning error information as data of a training data set through reference points; training the training data set by a support vector regression method so as to obtain a regression estimate model of the system positioning error; when the scenes or environment changes, updating the training data set to obtain a new regression estimate model of the system positioning error; and finally performing self-adaptive error compensation based on the model, so as to improve the environment self-adaptive performance and system positioning precision of the system.

Description

technical field [0001] The invention relates to the technical field of error compensation, and is mainly applicable to an error compensation method of a wireless positioning system. Background technique [0002] With the rapid development of wireless communication technology, its application in various fields is becoming more and more extensive. Especially in the field of positioning services, the research of wireless positioning system is a hot research topic. For a long time, the traditional GPS positioning system has occupied the main market of positioning services, but its wireless signal cannot work indoors or in narrow street environments due to the influence of buildings and walls. For this reason, many foreign scientists have introduced indoor wireless positioning systems based on various wireless measurement technologies, such as: BAT positioning system, Active badges positioning system, Cricket positioning system, etc. These wireless positioning systems are an imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D3/028
Inventor 石柯张仁同
Owner HUAZHONG UNIV OF SCI & TECH
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