Unambiguous tracking method for BOC and derivative signals thereof

A technology of unambiguous tracking and signal, applied in the field of satellite navigation signal processing, can solve the problems of incomplete sub-peak elimination and sacrifice of narrow peak characteristics of BOC signal, etc., to achieve the effect of eliminating sub-peaks and retaining narrow peak characteristics

Pending Publication Date: 2021-03-26
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for unambiguous tracking of BOC and its derivative signals, aiming to solve the technical problems of sacrificing the narrow peak characteristics of BOC signals and the incomplete elimination of secondary peaks in the prior art

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  • Unambiguous tracking method for BOC and derivative signals thereof
  • Unambiguous tracking method for BOC and derivative signals thereof
  • Unambiguous tracking method for BOC and derivative signals thereof

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element...

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Abstract

The invention discloses an unambiguous tracking method for BOC and derivative signals of the BOC, and the method comprises the steps: deducing a correlation function form of an autocorrelation expression and a matrix form of the BOC and derivative signals based on a shape code vector of the BOC signal, carrying out the decomposition of an autocorrelation function of the BOC signal, and obtaining acombined correlation subfunction; determining a reconstruction rule by utilizing the characteristics of symmetry and peak value equality of sub-functions, and reconstructing a correlation function byutilizing the reconstruction rule, so that a new correlation function only reserving a narrow correlation main peak is obtained, secondary peaks of BOC and derived signals thereof can be completely eliminated, narrow peak characteristics are reserved, the tracking precision is improved, and a code tracking loop structure in a receiver is improved at the same time. A filter circuit is reduced, a tracking structure in the receiver is simplified, and the hardware implementation complexity is reduced.

Description

technical field [0001] The invention relates to the field of satellite navigation signal processing, in particular to a method for unambiguous tracking of BOC and its derivative signals. Background technique [0002] At present, with the development and promotion of satellite navigation technology, satellite communication frequency band signals are increasing sharply, and the problems of frequency band congestion, radio frequency interference between signals, and incompatibility between navigation systems are becoming more and more serious. BOC signal is proposed as a solution. Because BOC signal has Compared with the traditional BPSK signal, the narrow correlation main peak and spectrum splitting feature have higher tracking accuracy and better anti-multipath performance, but the multi-sub-peak characteristic of the BOC signal correlation function is easy to cause false capture and false locking, resulting in signal synchronization. Serious tracking ambiguity problem. If th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/24G01S19/29
CPCG01S19/24G01S19/29
Inventor 孙希延宋少杰纪元法付文涛梁维彬贾茜子郭宁
Owner GUILIN UNIV OF ELECTRONIC TECH
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