A positioning method, device and mobile terminal
A technology of a mobile terminal and a positioning method, applied in the field of communication, can solve the problems of increasing the distance of the target position, positioning error, misjudged trajectory, etc.
Active Publication Date: 2019-10-22
HUAWEI TECH CO LTD
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[0004] However, positioning with a fixed broadcast frequency may easily lead to misjudgment of the trajectory when it is necessary to fit the trajectory of the target and analyze the historical arrival position: when the geometric characteristics of the positioning environment are relatively complex, when the target travels too fast, It will cause the distance of the target position to increase during two adjacent positionings, and there is a positioning error, which will easily lead to excessive divergence of positioning positions at each time and cause misjudgment of the trajectory
Especially for positioning applications that are particularly sensitive to travel trajectories due to operating procedures, operation management, and safety issues, misjudgment of trajectories will cause unexpected consequences
like figure 1 As shown, the trajectory 101 is the actual trajectory of the mobile terminal, but because the distance between the four positioning points is too large, it will lead to misjudgment that the trajectory is the trajectory 102 shown in the figure
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[0125] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0126] see image 3 , an embodiment of the positioning method in the embodiment of the present invention includes:
[0127] 301. The mobile terminal determines the desired itinerary L;
[0128] The mobile terminal determines an expected itinerary L, where the expected itinerary L is an expected value of the moving distance of the mobile terminal between two adjacent positionings.
[0129] It can be understood that there are many opportunities for the mobile terminal to ...
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The embodiment of the present invention discloses a positioning method and a mobile terminal, which are used to improve the accuracy of trajectory fitting, eliminate the phenomenon of trajectory misjudgment, improve the positioning display effect and automatically set a suitable positioning frequency. The method in the embodiment of the present invention includes: the mobile terminal first determines the expected travel distance L, which is the expected value of the mobile terminal's moving distance between two adjacent positionings, and then obtains its own speed value v, and then according to the expected travel distance L and its own speed value vAdjust the positioning frequency so that the deviation between the distance traveled by the mobile terminal between two adjacent positionings and the expected travel distance L is less than the specified threshold, and perform positioning according to the adjusted positioning frequency.
Description
technical field [0001] The present invention relates to the communication field, in particular to a positioning method, device and mobile terminal. Background technique [0002] Positioning is one of the main applications of short-range wireless technology. ZigBee, Ultra Wide Band (UWB), Ultrasonic, Radio Frequency Identification Devices (Radio Frequency Identification Devices, RFID) and other wireless positioning technologies have been researched for many years, and there are related mature products on the market, which are widely used in personnel positioning, Asset tracking, garage management, indoor navigation, logistics management, production scheduling and many other fields. In recent years, the industry has set off an upsurge of research on new wireless positioning technologies such as BLE and WiFi, especially in the fields of indoor positioning and LBS, which have huge market demand and commercial value. Positioning technology is used in diversified engineering pra...
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Login to View More IPC IPC(8): H04W64/00G01S13/46
CPCG01S5/12G01S5/0294G01S5/0264G01S13/46
Inventor 张晓平
Owner HUAWEI TECH CO LTD