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Processing device and method for tracking loop errors in positioning receiver

A tracking error and tracking loop technology, applied in the field of communications, can solve the problems of tracking loop tracking error accumulation, tracking loop loss of lock, etc.

Active Publication Date: 2021-04-16
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0013] The purpose of the embodiments of the present invention is to provide a tracking loop error processing device and method in a positioning receiver to solve the technical problem that the tracking error of the tracking loop in the prior art will continue to accumulate, resulting in the loss of lock of the tracking loop

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  • Processing device and method for tracking loop errors in positioning receiver
  • Processing device and method for tracking loop errors in positioning receiver
  • Processing device and method for tracking loop errors in positioning receiver

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Embodiment Construction

[0070] 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.

[0071] In view of the problem that the tracking error of the tracking loop in the prior art will continue to accumulate, resulting in the loss of lock of the tracking loop, the embodiment of the present invention provides a tracking loop error processing device and method in the positioning receiver, by adding the first judgment Timer at each interval to judge whether the tracking error exceeds the error threshold value. When the tracking error exceeds the erro...

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Abstract

The embodiment of the invention provides a processing device and method for tracking loop errors in a positioning receiver. The device comprises a discriminator, a first decision device, a second decision device, a position, speed and time PVT resolving circuit, a vector tracking corrector, a loop filter and the like. Whether the tracking error exceeds an error threshold value or not is judged at intervals of timing duration through a first decision device, if yes, PVT calculation in a position, speed and time PVT calculation circuit is not used, the tracking error is directly sent to a loop filter, and if not, the tracking error is corrected based on the PVT calculation circuit. Moreover, whether the corrected error exceeds an error threshold value or not is judged through a second decision device, if yes, the tracking error is directly used as the input of the loop filter, and if not, the corrected error is used as the input of the loop filter. In this way, by using the first decision device and the second decision device, accumulation of tracking errors can be avoided, and the reliability of a tracking loop is improved.

Description

technical field [0001] The invention relates to the field of communication technologies, in particular to a processing device and method for tracking loop errors in a positioning receiver. Background technique [0002] Facing complex indoor environments, an indoor Time Code Division-Orthogonal Frequency Division Multiplexing (TC-OFDM for short) positioning system has certain advantages over other indoor positioning technologies. [0003] The main realization idea of ​​the general TC-OFDM positioning system is: track the error between the local signal and the digital intermediate frequency signal of the positioning receiver through the tracking loop, and correct the error between the local signal and the digital intermediate frequency signal of the positioning receiver, so that The local signal is aligned with the digital intermediate frequency signal of the positioning receiver, so that the digital intermediate frequency signal in the received signal can be stripped in the t...

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Application Information

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IPC IPC(8): H04W4/02H04W4/021H04W4/029H04W4/33H04W64/00H04B1/12
Inventor 邓中亮董婕舒唐诗浩
Owner BEIJING UNIV OF POSTS & TELECOMM
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