Mutual synchronization-based indoor pseudolite double-point positioning system and method

A pseudolite and point positioning technology, applied in the field of indoor pseudolite double-point system based on mutual synchronization, can solve the problems of satellite navigation receiver losing positioning function and unable to penetrate building walls, etc.

Active Publication Date: 2017-04-26
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

However, due to the occlusion effect of buildings, satellite navigation signals cannot penetr...

Method used

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  • Mutual synchronization-based indoor pseudolite double-point positioning system and method
  • Mutual synchronization-based indoor pseudolite double-point positioning system and method
  • Mutual synchronization-based indoor pseudolite double-point positioning system and method

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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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Abstract

The invention discloses a mutual synchronization-based indoor pseudolite double-point positioning system and method. The system comprises two pseudolites and a Beidou/GPS navigation user receiver, wherein each of the two pseudolites comprises a Beidou/GPS signal receiver, a positioning signal transmitter, a transmitting antenna, a receiving antenna and a power supply module; the Beidou/GPS signal receiver of each pseudolite receives Beidou/GPS navigation signals of the own and the other pseudolite, resolves satellite number and pseudo-range information and transmits the satellite number and pseudo-range information to the own positioning signal transmitter; the positioning signal transmitter of each pseudolite resolves the clock correction of the positioning signal transmitters of the two pseudolites; the clocks of the positioning signal transmitters are adjusted; Beidou/GPS navigation signals are simulated, regenerated and transmitted to a service region; the Beidou/GPS navigation user receiver receives the Beidou/GPS navigation signals simulated and regenerated by the two pseudolites, resolves the satellite number of the two pseudolites and the pseudo-range of the two pseudolites, and calculates the distance between the Beidou/GPS navigation user receiver and the transmitting antenna of the first pseudolite as well as between the Beidou/GPS navigation user receiver and the transmitting antenna of the second pseudolite separately.

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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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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