Vector tracking method and filter

A technology of vector tracking and tracking channel, which is applied in the field of satellite positioning and can solve the problem that the receiver cannot adjust the position and speed in real time.

Inactive Publication Date: 2017-06-16
BEIJING QIYI CENTURY SCI & TECH CO LTD
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Problems solved by technology

[0005] In view of this, the present invention provides a vector tracking method and a filter to overcome the fact that the receiver cannot adjust its position and velocity in real time due to the high environmental noise of the receiver in the prior art, so that the receiver Carrier Doppler frequency shift and pseudo code phase of the satellite signal are consistent with the carrier Doppler frequency shift and pseudo code phase

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] At present, the receiver adopts independent tracking channels. For different tracking channels, there are separate carrier tracking and pseudo code tracking loops. The carrier frequency of the carrier tracking loop of the tracking channel is the same as that of the satellite it is tracking. The pseudocode phase of the tracking loop is the same as that of the satellite it is tracking. However, the commonality information between the satellite and the rec...

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Abstract

The embodiment of the invention provides a vector tracking method and a filter. A target function of position, speed and acceleration information of a receiver is established by comprehensively using pseudo code information of the tracked satellite of each tracking channel, and deep integration of the pseudo code information of the satellite of different moments and the state variable of the receiver is performed so that the carrier wave Doppler frequency shift and the pseudo code phase of each tracking channel of the receiver are maintained to be consistent with the carrier wave Doppler frequency shift and the pseudo code phase of the tracked satellite signals when the receiver is in the noisy environment.

Description

technical field [0001] The embodiment of the present application relates to the technical field of satellite positioning, and more specifically relates to a vector tracking method and a filter. Background technique [0002] The GPS (Global Positioning System, Global Positioning System) satellite navigation system includes: satellites and receivers, wherein the receiver belongs to the user equipment, and the receiver (such as the user's mobile phone terminal, vehicle-mounted equipment, etc.) is used to receive satellites transmitted by satellites Signals to obtain the necessary navigation and positioning information, after data processing, to complete the navigation and positioning work. [0003] The process of satellite positioning receiver in GPS satellite navigation system includes: making the carrier Doppler frequency shift and pseudo code phase of each tracking channel of the receiver consistent with the carrier Doppler frequency shift and pseudo code phase of the satell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/25
CPCG01S19/254G01S19/256
Inventor 杜洋
Owner BEIJING QIYI CENTURY SCI & TECH CO LTD
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