Universal BPSK/QPSK/BOC navigation signal tracking method

A navigation signal and signal technology, applied in the field of satellite navigation, can solve the problems of complex information processing and scheduling, large consumption of tracking channel resources, etc., and achieve the effects of improving maintainability, reducing scheduling complexity, and expanding the scope of application.

Active Publication Date: 2019-04-12
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

[0004] The present invention aims to solve the deficiencies of the prior art, provide a general BPSK / QPSK / BOC navigation signal tracking method, and overcome the shortcomings of the modern GNSS receiver, such as the large number of tracking channels and large resource consumption; complex information processing and scheduling

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  • Universal BPSK/QPSK/BOC navigation signal tracking method

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Embodiment Construction

[0031] Refer to attached figure 1 To illustrate the embodiment of the present invention.

[0032] A kind of general BPSK / QPSK / BOC navigation signal tracking method, described method comprises the following steps:

[0033] In the process of channel initialization, the value of each control signal in the channel is determined according to the signal debugging type tracked by the current channel. Specifically:

[0034] When the tracked navigation signal is in BPSK debugging mode, the pilot enable control signal is 0, the subcarrier type control signal is 0, the subcarrier enable signal is 0, and the local pseudo-code spacing selection control signal is 0; when the tracked navigation signal When it is QPSK, the pilot enable control signal is 1, the subcarrier type control signal is 0, the subcarrier enable signal is 0, and the local pseudo-code spacing selection control signal is 1; when the tracked navigation signal is a cosine type BOC, the pilot The frequency enable control ...

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Abstract

The invention provides a universal BPSK (Binary Phase Shift Keying) / QPSK (Quadrature Phase Shift Keying) / BOC (Binary Offset Carrier) navigation signal tracking method and can realize compatible tracking of a multi-body navigation signal. According to the universal BPSK / QPSK / BOC navigation signal tracking method, a physical tracking channel tracks navigation signals with modulation types BPSK, QPSK, and BOC through configuration, resource consumption of a modernized multi-system multi-frequency-point GNSS receiver is reduced through channel dynamic configuration, thereby enlarging the application range of an FPGA program, improving the maintainability of the FPGA program, reducing the scheduling complexity of information processing software on signal reception, and simplifying programming.

Description

technical field [0001] The invention relates to the field of satellite navigation, in particular to a general BPSK / QPSK / BOC navigation signal tracking method. Background technique [0002] The traditional navigation signal system is BPSK. QPSK and BOC modulations have been added to modern GNSS signals. The QPSK method adds a pilot branch on the basis of the traditional BPSK, which is used to improve the signal receiving sensitivity; the BOC (Binary OffsetCarrier, binary carrier offset) modulation method, based on the pseudo code with a rate of n*1.023M, through different Or operate to add a binary subcarrier with a rate of m*1.023M, which is recorded as BOC(m,n) (hereinafter referred to as BOC). The binary subcarrier is 0 / 1 alternate binary data, which can be regarded as a special pseudocode According to the different subcarrier signals, it is divided into sine type and cosine type. BOC modulation divides the frequency spectrum of the navigation signal into two symmetrical...

Claims

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Application Information

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IPC IPC(8): G01S19/24G01S19/29
CPCG01S19/243G01S19/29
Inventor 赵丙风赵中阳
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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