High precision wireless positioning method and system based on multipath dispersion information
A kind of scattering information, wireless positioning technology, applied in diversity/multi-antenna system, radio wave measurement system, positioning and other directions, can solve the problems of bad radio wave propagation environment, signal measurement error, positioning technology can not be well used and so on
A kind of scattering information, wireless positioning technology, applied in diversity/multi-antenna system, radio wave measurement system, positioning and other directions, can solve the problems of bad radio wave propagation environment, signal measurement error, positioning technology can not be well used and so on
CN101394672AInactive Publication Date: 2009-03-25SHANGHAI UNIV
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[0033] Preferred embodiments of the present invention are described as follows in conjunction with the accompanying drawings: see figure 1 , the wireless positioning system adopted by the high-precision wireless positioning method based on multipath scattering information includes a mobile terminal, a sensor device and a central processing unit, which are used to locate the precise position of the mobile terminal from the received radio wave signal reaching the sensor. It is characterized in that the precise positioning in the non-line-of-sight propagation environment is realized by combining the information of the multipath scatterer with the measured angle of arrival and time of arrival of the radio wave. The specific implementation steps are as follows: (1) In the non-line-of-sight propagation environment, the radio waves emitted by the mobile terminal are reflected by many scatterers and then reach the sensor receiving device. Multipath signals arrive at the sensor device ...
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The invention relates to a high-precision radio positioning method and a system thereof based on multidiameter scattering information, which can be applied to various positioning environments, particularly the rich multidiameter conditions with an intense scattering environment and many barriers near a mobile terminal that needs to be positioned, such as urban areas, hilly areas and the like. The method is a high-precision practical positioning technology and comprises the following steps: firstly, a reasonable multidiameter scattering radio positioning model which is transmitted by non-line-of-sight electric waves is established according to the actual communication environment; then the scattering information is estimated by the positioning data of the multipacket and multidiameter scattering information detected by a plurality of sensors; then a group of analog sensors are reconfigured by the scattering information; and finally, at the time of final positioning, a new judgment rule and a new algorithm obtained by revision and used for the multidiameter scattering information are put forward, so as to realize precise target positioning. The high-precision radio positioning method and the system thereof can effectively inhibit non-line-of-sight communication errors, and have the advantages of low cost, low energy consumption and very high positioning precision.
Description
technical field [0001] The invention relates to a wireless positioning method and system in wireless communication, and in particular provides a high-precision wireless positioning method and system based on multipath scattering information. Background technique [0002] With the rapid increase of data services and multimedia services, people's demand for new services based on wireless positioning technology is increasing, especially in complex scattering environments, such as airport halls, exhibition halls, warehouses, supermarkets, libraries, underground parking lots In environments such as mines and mines, it is often necessary to determine the location information of mobile terminals or their holders, facilities and objects indoors, which promotes the in-depth research on wireless positioning technology. At the same time, providing users with accurate positioning information has become one of the standard services of the new generation of wireless communication systems....
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Patent Timeline
25 Mar 2009
Publication
CN101394672A
- IPC
- H04Q7/38; H04B7/02; G01S5/02
- CPC
- Y02B60/50; Y02D30/70
- Inventors
- 石强; 方勇