An indoor pseudolite dual-point positioning system and method based on mutual synchronization

A pseudolite and point positioning technology, which is applied in the field of indoor pseudolite dual-point system based on mutual synchronization, can solve problems such as inability to penetrate building walls, and loss of positioning function of satellite navigation receivers.

Active Publication Date: 2019-04-26
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the occlusion effect of buildings, satellite navigation signals cannot penetrate the walls of buildings, so that the satellite navigation receiver loses its positioning function

Method used

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  • An indoor pseudolite dual-point positioning system and method based on mutual synchronization
  • An indoor pseudolite dual-point positioning system and method based on mutual synchronization
  • An indoor pseudolite dual-point positioning system and method based on mutual synchronization

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Embodiment Construction

[0066] Below in conjunction with specific embodiment and accompanying drawing, the present invention will be further described:

[0067] figure 1 It is a schematic diagram of an indoor pseudolite dual-point positioning system based on mutual synchronization of the present invention, the first pseudolite 1, the second pseudolite 2 and the Beidou / GPS navigation user receiver,

[0068] The first pseudolite and the second pseudolite all include a Beidou / GPS signal receiver, a positioning signal transmitter, a transmitting antenna, a receiving antenna and a power supply module; as figure 2 as shown,

[0069] The Beidou / GPS signal receiver of each pseudolite receives the Beidou / GPS navigation signal simulated and reproduced by itself and another pseudolite through its own receiving antenna, and calculates the satellite number and pseudo-range information according to the Beidou / GPS navigation signal , transmit the satellite number and pseudo-range information to its own positioni...

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PUM

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Abstract

The invention discloses an indoor pseudolite dual-point positioning system and method based on mutual synchronization, which includes two pseudolites and a Beidou / GPS navigation user receiver; both pseudolites include a Beidou / GPS signal receiver and a positioning signal transmitter machine, transmitting antenna, receiving antenna and power supply module; the Beidou / GPS signal receiver of each pseudolite receives the Beidou / GPS navigation signal of itself and another pseudolite, calculates the satellite number and pseudo-range information, and transmits them to itself The positioning signal transmitter of each pseudolite; the positioning signal transmitter of each pseudolite solves the clock difference of the two pseudolite positioning signal transmitters; adjusts their respective clocks; and simulates the regeneration of Beidou / GPS navigation signals to the service area; Beidou / GPS The navigation user receiver receives the Beidou / GPS navigation signals simulated and reproduced by two pseudolites, calculates the satellite numbers of the two pseudolites and the pseudo-range information of the two pseudolites, and calculates the transmitting antenna and the second pseudolites respectively to the first pseudolites. The distance between the transmitting antennas of the two pseudolites.

Description

technical field [0001] The invention relates to the field of indoor and tunnel positioning, in particular to an indoor pseudo-satellite dual-point system and method based on mutual synchronization. Background technique [0002] At present, the demand for indoor positioning is becoming more and more urgent. People hope to know where they are in large shopping malls, public places, and long high-speed tunnels, and to reach their destination quickly. [0003] Satellite navigation systems represented by Beidou and GPS are more and more widely used, and have become an indispensable function for smartphones and car navigators. However, due to the occlusion effect of buildings, the satellite navigation signal cannot penetrate the walls of buildings, so that the satellite navigation receiver loses its positioning function. [0004] Based on the above reasons, there is a need for a pseudolite system compatible with Beidou and GPS navigation signals. Under the condition that the soft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/20
CPCG01C21/206
Inventor 甘兴利蔚保国祝瑞辉李雅宁张衡
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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