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Antenna array single base station positioning method based on pulse amplitude ratio fingerprints

A positioning method and antenna array technology, applied in wireless communication, electrical components, etc., can solve problems such as impact, receiving noise and reference point synchronization error

Inactive Publication Date: 2013-03-27
OCEAN UNIV OF CHINA
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Problems solved by technology

In addition, there are NLOS effects, synchronization between receiving noise and reference points, and errors caused by solving equations, etc., all of which need to be paid attention to when designing the system

Method used

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  • Antenna array single base station positioning method based on pulse amplitude ratio fingerprints
  • Antenna array single base station positioning method based on pulse amplitude ratio fingerprints
  • Antenna array single base station positioning method based on pulse amplitude ratio fingerprints

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with specific embodiments.

[0029] 1. Single base station positioning principle based on antenna array

[0030] The antenna array-based single base station ultra-wideband wireless positioning algorithm uses TDOA and AOA joint positioning technology to make up for the shortcomings of the two technologies to achieve single base station and precise positioning. The system consists of an antenna array, a 6-1 switch (that is, a radio frequency switch), a target node, and a reference base station (including a radio frequency module, a baseband module, and a main processor CPU, etc.), and the system architecture is as follows: figure 1 shown. This method uses a single reference base station with an antenna array to simultaneously measure the distance between the target node and the reference base station and the angle of arrival of the pulse transmitted by the target node to the reference base station, so...

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Abstract

The invention discloses an antenna array single base station positioning method based on pulse amplitude ratio fingerprints. The antenna array single base station positioning method includes steps of 1), establishing a fingerprint database; 2), performing AOA (angle of arrival) estimation by means of the fingerprint database; 3), performing TOA (time of arrival) estimation: utilizing the conventional method to measure TOA and calculating the distance; and 4), performing wireless UWB (ultrawide band) positioning: according to the estimation values of the AOA and the TOA, realizing wireless positioning based on UWB by means of conventional UWB positioning algorithm. According to the above method, pulse amplitude measurement substitutes for conventional pulse arrival trace time measurement, so that calculation of high-precision clock required for the AOA of signals due to trace time different measurement can be avoided, equipment requirements of a base station are simplified, and meanwhile, positioning accuracy of the system can be increased since amplitude measurement is simpler and higher in accuracy. Besides, simulation result indicates that error of the AOA calculated by the pulse amplitude measurement can be controlled within 0.1 degree.

Description

technical field [0001] The invention relates to a method for positioning a single base station of an antenna array based on pulse amplitude ratio fingerprints. Background technique [0002] With the development of wireless communication technology, the world in the 21st century will soon enter the era of wireless Internet from the network era. Emerging wireless network technologies, such as WiFi, WiMax, ZigBee, Ad hoc, BlueTooth, and UltraWideBand (UWB), have been widely used in all aspects of public life, such as offices, homes, factories, and parks. The application of wireless network-based positioning technology is even more Has broad development prospects. According to the forecast of investment bank Rutberg, Wireless Data Research Group and International Data Corporation, new network technology will reach tens of billions or even hundreds of billions of dollars in revenue in the next three years, and the application of wireless positioning technology will occupy a larg...

Claims

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Application Information

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IPC IPC(8): H04W64/00
Inventor 张浩李娟崔学荣吴春雷张国平王景景王辛杰
Owner OCEAN UNIV OF CHINA
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