Positioning method and system

A positioning method and positioning system technology, which is applied in positioning, two-way line system station, radio wave measurement system, etc., can solve the problems of inability to accurately locate, the accuracy of the positioning method, and the difficulty of carrying the global positioning system.

Active Publication Date: 2009-03-11
INVENTEC(NANJING) TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0004] However, since the communication base station signal of the personal handheld communication system covers a range of about 500 meters, the obtained position error range is about 100 meters. Therefore, this positioning method can only find the approximate location of the tracked object. range, cannot be pinpointed
On the other hand, the position error range obtained by applying the Global Positioning System (Global Position System, GPS) can be less than ten meters, but compared with the communication device of the Personal Handy-phone System (PHS), the global positioning The system is less portable and can only be used outdoors
[0005] Therefore, the present invention provides a positioning method to solve the accuracy problem of the above positioning method

Method used

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  • Positioning method and system

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Embodiment Construction

[0046] see figure 1 , figure 1 It is a handheld flow chart illustrating a positioning method according to a specific embodiment of the present invention. Such as figure 1 As shown, the positioning method of the present invention may mainly include the following steps: Step S1 is that the positioning party obtains the rough range of the positioned party through the positioning platform. In step S2, the locating party sends a talk-back request short message to the located party and opens a talk-back group after arriving within the approximate range mentioned above. In step S3, the located party joins the intercom group after receiving the intercom request message, and simultaneously sends a talk-back signal to the locating party. Finally, in step S4, the locating party judges the distance to the located party according to the strength of the received intercom signal. When the distance is short, the intercom signal strength is strong, and relatively, the intercom signal stren...

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Abstract

The invention discloses a locating method which comprises the following steps: (a) a locating party obtains a rough range of a located party through a locating platform; (b) the locating party reaches the rough range, sends a brief request message to the located party and turns on a talkback group; (c) the located party receives the talkback brief request message, then joins into the talkback group and transmits a talkback message to the locating party; and (d) the locating party receives the talkback message and judges the distance between the locating party and the located party according to the strength of the talkback message, thereby the locating party can accurately locate the located party.

Description

technical field [0001] The present invention relates to a positioning method, and in particular to a method for precise positioning using an intercom function. Background technique [0002] Wireless communication has been one of the focuses of digital communication research in recent years, and with the advancement of wireless communication technology, various convenient services have been gradually applied by all walks of life, such as wireless network, radio frequency identification technology and wireless positioning system. Among them, the wireless positioning system is used by the general public due to its wide range of applications. With the help of the wireless positioning system, in addition to knowing the current location of the person, it is also very helpful for tracking specific objects, such as knowing the whereabouts of the elderly and children. [0003] In particular, the positioning function of the Personal Handy-phone System (PHS) can be used to track the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q5/24G01S5/02
Inventor 卢标
Owner INVENTEC(NANJING) TECH CO LTD
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