Device and algorithm for precisely locating mobile terminal
A precise positioning, mobile terminal technology, applied in the direction of location information-based services, transmission monitoring, electrical components, etc., can solve the limitations of mobile terminal positioning technology, increase the difficulty of system maintenance, reduce positioning accuracy and other problems, achieve a small number, High reliability and improved accuracy
Inactive Publication Date: 2012-05-02
DALIAN MARITIME UNIVERSITY
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Problems solved by technology
If the above-mentioned positioning technology is applied to tunnels, mines and some corridors, because such environmental structures are relatively narrow and long, especially in some turning places, GPS positioning technology and cellular mobile communication mobile station positioning technology can hardly be used, and The positioning technology of mobile terminals based on wireless sensor networks will also be greatly limited, and the positioning accuracy will be greatly reduced, unless a large number of positioning base stations are added, which will inevitably increase the positioning cost and increase the difficulty of system maintenance.
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[0030] The present invention will be further described below in conjunction with the accompanying drawings. Such as Figure 1-3 As shown, a device for precise positioning of a mobile terminal includes a positioning termination unit A1, a positioning termination unit B2 and a mobile positioning terminal receiving unit M3. The positioning termination unit A1 is fixedly installed at one end of the tunnel, and the positioning The termination unit B2 is fixedly installed at the other end of the tunnel, the mobile positioning terminal receiving unit M3 is installed on the mobile terminal, the positioning termination unit A1 is connected with the positioning termination unit B2 through the leaky cable 4, and the mobile positioning terminal receiving unit M3 Simultaneously connect the positioning terminal unit A1 and the positioning terminal unit B2 through the wireless carrier signal, and the positioning terminal unit A1 and the positioning terminal unit B2 are connected through the ...
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The invention discloses a device and method for precisely locating a mobile terminal. The device comprises a locating terminal receiving unit A, a locating terminal receiving unit B and a mobile locating terminal receiving unit M, wherein the locating terminal receiving unit A is fixedly arranged at one end of a tunnel, the locating terminal receiving unit B is fixedly arranged at the other end of the tunnel, and the mobile locating terminal receiving unit M is arranged on the mobile terminal. The method for precisely locating the mobile terminal comprises the following steps of: respectively arranging an electric wave emitter at two ends of a leakage cable by utilizing the difference of electric wave link loss values of any points of the leakage cable in a coverage range, respectively receiving emission signals of the two ends of the leakage cable depending on a power detection unit of the mobile terminal, detecting and calculating each power level value RSSI (Received Signal Strength Indication) of two paths of signals, comparing and calculating two paths of electric waves to obtain the position of the mobile terminal relative to the leakage cable, and adding with the absolute position of the leakage cable in space to determine the absolute position of the mobile terminal in space.
Description
technical field [0001] The invention relates to a positioning technology of a wireless network mobile station, in particular to a device and an algorithm for precise positioning of a mobile terminal. Background technique [0002] As an important subject of radio detection, the positioning technology of wireless network mobile stations has attracted a large number of researchers to study, and many positioning methods have also been proposed. The positioning systems that are already in use and have relatively mature technologies mainly include: GPS satellite positioning system, cellular mobile communication mobile station positioning system, and wireless sensor network mobile terminal positioning system. If the above-mentioned positioning technology is applied to tunnels, mines and some corridors, because this type of environmental structure is relatively narrow and long, especially in some turning places, GPS positioning technology and cellular mobile communication mobile sta...
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IPC IPC(8): H04W4/02H04W64/00H04B17/00H04B17/309
Inventor 陈鹏
Owner DALIAN MARITIME UNIVERSITY