Positioning system and positioning method based on soft position information of single base station

Abstract

The invention provides a positioning system and method based on single base station soft position information, and the system comprises a positioning base station which is used for receiving positioning data transmitted by a user terminal, and generating a positioning result based on the positioning data; the user terminal is used for sending positioning data to the positioning base station and receiving a positioning result; the positioning base station comprises an antenna array, a clock synchronization module, a measurement module, a soft position information extraction module, a communication module and a positioning module, and the user terminal comprises a wireless measurement module, a communication module and an inertial measurement unit. The soft position information extraction module is used for extracting soft position information from the measurement information related to the position of the user; and the positioning module is used for estimating the user position according to the soft position information and inertial data of the user terminal. According to the positioning system and the positioning method provided by the invention, the problem of phase ambiguity caused by the fact that the array antenna spacing is greater than the half-wavelength in single base station positioning can be effectively solved, so that the positioning precision can be remarkably improved by increasing the antenna array aperture.

Description

technical field

[0001] The invention relates to the technical field of wireless communication, in particular to a positioning system and a positioning method based on soft position information of a single base station. Background technique

[0002] Real-time, high-precision location information has important applications in many fields, such as the Internet of Things, smart factories, drone positioning, and emergency rescue. Global Navigation Satellite System (GNSS) can provide meter-level location information in open outdoor environments. However, the signal strength of the satellite signal is low and it is difficult to penetrate buildings, so the positioning stability is poor in urban canyons and cannot be used indoors. In order to meet the needs of real-time high-precision positioning services, many positioning technologies have emerged, such as positioning technology based on radio frequency signals, positioning technology based on inertial sensors, and positioning tech...

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