A method for user location tracking in mountainous environment using mobile phone air pressure and acceleration sensors
A technology of acceleration sensor and air pressure, which is used in navigation through speed/acceleration measurement, climate sustainability, advanced technology, etc. It can solve the problem of high energy consumption, and achieve the effect of low energy consumption, high-precision positioning, and accurate positioning results.
Active Publication Date: 2022-07-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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[0012] Purpose of the invention In order to overcome the deficiencies in the prior art, especially the problem of high energy consumption, the present invention provides a method for tracking the user's location in a mountainous environment by using the air pressure and acceleration sensors of the mobile phone. The method only requires the air pressure and acceleration of the mobile phone Acceleration sensor provides high-precision positioning services while greatly reducing energy consumption
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[0056] Below in conjunction with the accompanying drawings and specific embodiments, the present invention will be further clarified. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. Modifications in the form of valence all fall within the scope defined by the appended claims of the present application.
[0057] A method for user location tracking in mountainous environment using mobile phone air pressure and acceleration sensors, such as Figure 1-5 , as shown, including the following steps:
[0058] Step 1, initial probability: Given the initial position, assuming that the error of the initial position obeys a normal distribution, and the error range is 0-10 meters, according to map matching, obtain the probability that the user's initial position is at the initial point, that is, the initial probability.
[0059] In the method for obtaining the initial probability in the step ...
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The invention discloses a method for realizing user position tracking in mountain environment by using mobile phone air pressure and acceleration sensor. The air pressure sensor and acceleration sensor can realize the position tracking of mobile users in mountain route environment. This method monitors the user's altitude through the air pressure sensor of the mobile phone, and through map route matching, the user's possible location set A can be obtained; since there are more than one possible location, it is necessary to eliminate the wrong location by other means. The method is to use the acceleration sensor Calculate the moving distance of the user from the last known position to obtain another possible position set B, and perform probability analysis on these two position sets, and the position with the highest probability is the current real position of the user. The method can replace the traditional GPS technology to realize outdoor mountain positioning, and greatly reduces the energy consumption under the condition of achieving the same positioning accuracy.
Description
technical field [0001] The invention relates to a method for realizing user position tracking in a mountain environment by using a mobile phone air pressure and acceleration sensor, and belongs to the technical field of positioning. Background technique [0002] In today's rapidly developing location-based applications, the use of smartphones for positioning occupies a very important position. At present, the vast majority of positioning technologies require the support of certain infrastructures, such as cellular networks, Wi-Fi wireless networks and Global Positioning System (GPS). Each of these technologies has its own advantages and disadvantages, and there are limitations in accuracy, usage scenarios, and energy consumption. In the field of positioning technology, in outdoor positioning and outdoor position tracking scenarios, how to reduce the energy consumption of mobile positioning devices is a very hot issue, because the current commonly used GPS positioning techno...
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IPC IPC(8): G01C21/10G01C21/20
CPCG01C21/10G01C21/20Y02D30/70
Inventor 叶海波
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS