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Universal navigation signal capturing and processing method

A technology of navigation signals and processing methods, applied in sustainable communication technology, satellite radio beacon positioning system, advanced technology, etc. Flexibility, high sensitivity, and the effect of faster capture

Active Publication Date: 2021-08-13
SPACE STAR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The currently disclosed acquisition methods for navigation signal processing either only support one or two types of navigation constellation navigation signals, or only have a single advantage of acquisition speed or acquisition sensitivity, are not universal, poor in flexibility, and have a single application scenario. certain limitations

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  • Universal navigation signal capturing and processing method
  • Universal navigation signal capturing and processing method

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, which are only part of the embodiments of the present application, not all of them.

[0043] The general navigation signal capture and processing method provided by the invention can be used for fast capture and high-sensitivity capture of various navigation signals. The invention can generate local codes of various system signals through configuration, supports the application of various PMF-FFT algorithm parameters, processes data in the form of a matrix, effectively combines two kinds of FFT length conversions, and meets the requirements of various capture speeds and capture sensitivities. It can support fast and highly sensitive capture operations for GPS L1CA / L5 / L1C, BD2 B1I / B2I / B3I / B2a / B2b / S2C, Galileo E1 / E5a / E5b, GLONASS L1f / L2f and other navigation signals. A general navigation signal acquisition and processing method provided by the present inven...

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Abstract

The invention discloses a universal navigation signal capturing and processing method, and relates to a rapid and efficient signal capturing method for traditional and modern frequency point signals of an existing mainstream navigation system, including GPS L1CA / L5 / L1C, BDSB1I / B2I / B3I / B1C / B2a / B2b / S2C, Galileo E1 / E5a / E5b, GLONASS L1f / L2f and other civil signals. According to the invention, a corresponding local code is generated according to the configuration of software, adaptive sampling is carried out on the local code and signal data, and capture processing is carried out based on a PMF-FFT algorithm. The segment length and the segment number in PMF-FFT algorithm parameters have flexible configuration, and the effects of flexibly configuring various PMF-FFT algorithm parameters and flexibly designing the time-frequency unit search processing parallelism are achieved by designing the effective combination of two FFT length conversion functions. The method has a flexible switching function of various capture speeds, capture sensitivity and Doppler coverage, and has the characteristics of a strong signal compatibility, a fast capture speed and high capture sensitivity.

Description

technical field [0001] The invention belongs to the field of satellite applications, and relates to a general navigation signal acquisition and processing method, which can be used for GPSL1CA / L5 / L1C, BDS B1I / B2I / B3I / B1C / B2a / B2b / S2C, Galileo E1 / E5a / E5b, GLONASS L1f / Fast and highly sensitive capture of L2f and other navigation civil signals. Background technique [0002] The global satellite navigation system (GNSS) can provide all-weather, high-precision position, speed and time information to various fields of the world's sea, land, air and sky. important impetus. [0003] After continuous development and improvement of GNSS, satellite navigation signals have been improved and changed in terms of modulation system, spread spectrum mechanism, and new frequency band additions, etc., which have greatly increased the number of navigation signals and diversified modulation methods, and the ranging code has Long-term complexity development trend. These new changes require the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/30G01S19/29G01S19/37
CPCG01S19/30G01S19/29G01S19/37Y02D30/70
Inventor 杨燕姣陈静刘坤连猛刘飞王君帅薛志芹
Owner SPACE STAR TECH CO LTD
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