High sensitive receiver for global positioning system as well as indoor and outdoor seamless switch method thereof

Abstract

The invention relates to a global position system (GPS) receiver technology, in particular to a global position system receiver with high sensitivity for the location and navigation, which is applied in a high sensitivity navigation receiver in an interior environment, and an indoor and outdoor seamless switching method. The receiver is a partial structure of an assistant satellite navigation location system (AGNSS); the assistant satellite navigation location system (AGNSS) comprises at least a constellation, the antenna, an emitting frequency circuit, a location server and a reference receiver etc; the components are combined into an integrated location system. The method realizes the seamless switching method between the interior and the exterior through three switching methods; the invention mainly solves the related technical problems, such as the integrated hardware and the software for the seamless switching method between the interior and the exterior. The invention has the positive effects that the storage capture and the flow follow are realized for the more rapid and exact location; the invention improves the sensitivity index of the end user; the invention has the advantage of the realization of seamless switch under the condition of two signals with simplicity and reliability.

Description

technical field [0001] The invention relates to a GPS (Global Position System) receiver technology, in particular to a high-sensitivity navigation receiver mainly used in indoor environments for positioning and navigation and its indoor and outdoor seamless switching method. Background technique [0002] The vast majority of users who use handheld positioning devices are distributed in urban areas with high-rise buildings and spend most of their time indoors. In environments such as indoors, between high-rise buildings, underground parking lots, elevated roads, etc., due to shading, the satellite signal of the global positioning system is very weak, sometimes even only -160dBmW, which is 30dB lower than that in an open environment. Ordinary satellite navigation receivers can no longer position. At present, global positioning systems are constantly developing, such as the GPS system in the United States, the Galileo system in Europe, and the Beidou navigation system in China...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: aiming at the requirement of high-precision positioning in the indoor area, it mainly solves the overall hardware realization problem of the high-sensitivity satellite navigation receiver; How to obtain high-precision positioning results for the hardware system; to solve the switching problem of storage capture and pipeline tracking; to solve the key synchronization control technical problems of the capture / tracking synchronization module; to solve the capture baseband in the snapshot capture module The problem of switching information output by the processing unit; how to improve the sensitivity index to achieve faster and more accurate positioning and other related technical issues

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