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MIMO pseudo satellite system base station device

A pseudolite and base station technology, applied in the field of indoor positioning, to achieve the effect of meeting high-precision positioning services and reducing positioning errors

Pending Publication Date: 2022-03-29
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: In order to reduce the complexity of indoor positioning pseudolite system networking and clock synchronization between base stations, the present invention provides a MIMO pseudolite system base station device, which has the characteristics of multiple transmission and multiple reception

Method used

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  • MIMO pseudo satellite system base station device
  • MIMO pseudo satellite system base station device

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Embodiment 1

[0022] Such as figure 1 As shown, a kind of MIMO pseudolite system base station device of the present embodiment includes an m channel pseudolite receiving module, a baseband signal processing module, a baseband signal generating module and an n channel pseudolite transmitting module;

[0023] The m-channel pseudolite receiving module receives signals from other m pseudolite base stations in the same pseudolite network, generates m-channel digital intermediate frequency pseudolite signals, and outputs them to the baseband signal processing module;

[0024] The baseband signal processing module solves the navigation message, calculates the clock deviation and generates clock correction parameters according to the m-channel digital intermediate frequency pseudolite signal output by the m-channel pseudolite receiving module, and outputs it to the baseband signal generation module;

[0025] The baseband signal generation module adjusts the clock information, signal phase and time ...

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Abstract

The invention provides an MIMO pseudo satellite system base station device. The MIMO pseudo satellite system base station device comprises an m-channel pseudo satellite receiving module, a baseband signal processing module, a baseband signal generating module and an n-channel pseudo satellite transmitting module. According to the invention, m paths of pseudo-satellite signals can be transmitted and n paths of pseudo-satellite signals can be received at the same time. A plurality of paths of pseudo satellite transmitters in a single MIMO pseudo satellite base station can form an independent pseudo satellite positioning constellation, so that the small-area networking positioning requirement is met; a plurality of MIMO pseudo satellite base stations can also realize clock reference synchronization among the base stations in a bidirectional receiving mode. According to the device provided by the invention, networking of the pseudo satellite positioning system is more flexible, the cost is lower, clock synchronization among a plurality of base stations can be realized, and the precision and stability of positioning service are improved.

Description

technical field [0001] The invention relates to a base station device of a MIMO pseudolite system, belonging to the technical field of indoor positioning. It is suitable for buildings, underground, tunnels and other non-exposed spaces that need to provide positioning services, especially for areas where satellite signals cannot be received, the range is wide, and the environment is complex. Background technique [0002] As people's demand for location services becomes more and more urgent, various location technologies are constantly developing. At present, in the vast outdoor area, the technology represented by the global navigation satellite system (GNSS) such as Beidou and GPS is becoming more and more perfect, which can basically meet the corresponding positioning requirements; but in the indoor space, because of the occlusion of objects such as walls, GNSS signals cannot Therefore, pseudolite technology has become one of the important methods to solve the problem of in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/021H04W4/33H04W56/00H04W64/00H04B7/0413
CPCH04W4/021H04W4/33H04W56/001H04W64/00H04B7/0413
Inventor 王庆施上张波胡硕阳媛
Owner SOUTHEAST UNIV
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