GPS receiver locating in doors and auxiliary satellite navigation positioning system

Abstract

The invention relates to an auxiliary satellite navigation system and a global positioning system (GPS) receiver, in particular to a high-sensitivity navigation receiver mainly used indoors as well as an indoor positioning GPS receiver and an auxiliary satellite navigation positioning system adopting high-sensitivity satellite navigation positioning technology. The system at least comprises a terminal receiver, a reference receiver, a positioning server and a communication network; all devices are combined into an integral indoor positioning system; the entire system is divided into a high-sensitivity satellite navigation receiver and a network auxiliary system. Through adopting the positioning mode in which point positioning under weak signal condition is combined with continuous positioning under strong signal condition, the method mainly solves related technical problems such as the organic combination of integral hardware implementation. The invention has the advantages that: the system and the method improve the sensitivity index of a terminal user and reduce first positioning time; moreover, the designed navigation receiver can process indoor weak satellite signal, etc.

Description

technical field [0001] The invention relates to an auxiliary satellite navigation system and a GPS (Global Position System) receiver, in particular to a high-sensitivity navigation receiver and its high-sensitivity satellite navigation positioning technology mainly used in indoor environments. Background technique [0002] At present, handheld positioning terminals in urban and indoor environments usually rely on telecommunication networks to complete positioning. The global mobile communication GSM network provides positioning services to users through technologies such as Cell-ID (cell number), enhanced observed time difference technology E-OTD (Enhanced Observed Time Difference) and radio wave time difference of arrival TDOA (Time Difference Of Arrival). GPSOne technology uses code division multiple access CDMA base stations to assist positioning when satellite signals cannot be received, but these technologies have disadvantages such as limited network capacity, limited ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: aiming at the requirement of high-precision positioning in indoor areas, it mainly solves the overall hardware implementation problem of high-sensitivity satellite navigation receiver and network auxiliary system ; solve the problem of how to obtain high-precision positioning results through the entire hardware system; solve the problem that in addition to providing auxiliary messages, the AGNSS system should also be able to assist the implementation of high-sensitivity receiver signal processing algorithms; solve how to improve sensitivity indicators, including time and Technical issues related to the realization of frequency auxiliary information

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