Correlation fluctuation based BOC (binary offset carrier) signal parameter blind estimation method

A signal parameter and autocorrelation estimation technology, applied in radio wave measurement system, satellite radio beacon positioning system, measurement device, etc., can solve the problems of complex calculation and low signal-to-noise ratio of spectral correlation method, and overcome nonlinear calculation Complexity, effect of improving noise immunity performance
CN104199064AActive Publication Date: 2014-12-10CHONGQING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHONGQING UNIV OF POSTS & TELECOMM
Publication Date
2014-12-10

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Abstract

The invention relates to a correlation fluctuation based BOC (binary offset carrier) signal pseudo code period and subcarrier rate blind estimation processing method, in particular to a correlation fluctuation based BOC (binary offset carrier) signal parameter blind estimation method, and belongs to the technical field of signal processing. According to the method, multiple parameters of a BOC signal can be estimated under the conditions of different correlation integral time delays through a fluctuation correlation method; when a ratio among the correlation integral time delays is large, pseudo code period of the signal can be estimated; when the ratio among the correlation integral time delay is small, subcarrier rate parameters of the BOC signal can be estimated. The method is high in rate of convergence and good in estimation accuracy, and the problems of complexity in nonlinear operation of a spectral correlation method and incapability of pseudo code period estimation are solved. By the method, the pseudo code period, namely subcarrier rate can be estimated accurately under the condition of low signal to noise ratio, so that the method has significance to subsequent processing and fine feature analysis of the signal.
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Description

technical field

[0001] The invention relates to navigation communication signal processing, in particular to a problem of blind estimation of pseudocode period and subcarrier rate of binary offset carrier modulation (Binary-Offset-Carrier, BOC) signal based on correlation fluctuation. Background technique

[0002] With the popularization and development of satellite navigation technology, BOC modulation technology is widely used in the new generation of satellite navigation systems, such as the latest generation of Galileo and GPS navigation systems and my country's Beidou satellite navigation system. According to the latest Galileo space signal interface control document, 8 out of 10 Galileo navigation signals use BOC modulation or improved BOC modulation. Similar to the design of the Galileo system, the newly added M-code military signal in the GPS navigation system of the United States also adopts the BOC modulation method. The military signal and the civilian signal are ...

Claims

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