Beidou terminal signal receiving and processing device and method

Abstract

The invention belongs to the field of radio navigation location technology and especially relates to a Beidou terminal signal receiving and processing device and method. The device includes an antenna unit, a radio frequency unit, a baseband signal processing unit, an information processing unit, a power unit and a display control unit connected successively. The method includes capturing fake satellites and satellites respectively by adopting a storage-based baseband capturing method; receiving fake satellite signals and real satellite signals for fake satellite and satellite information decoding; performing updating operation on extracted navigation parameters; extracting carrier phase, code phase and Doppler observation information and performing calculation on location, speed measurement and time service. According to the invention, by the design of an integrated antenna receiving the satellite signals and the fake satellite signals and a radio frequency front end and with the adoption of an algorithm realizing seamless positioning depending on independent positioning and compatible positioning for solving a problem of near-far effect of the two kinds of signals, constellation geometric structure is improved and user positioning precision is improved.

Description

technical field [0001] The invention belongs to the technical field of radio navigation and positioning, and in particular relates to a device and method for receiving and processing Beidou terminal signals. Background technique [0002] How to ensure reliable navigation and positioning services for users when satellite signals are seriously blocked and the service continuity of satellite navigation systems is reduced is a problem that major satellite navigation systems are eager to solve. The ground-based navigation signal network is to set up a certain number of pseudo-satellites and launch similar Based on the pseudolite navigation signal of the navigation satellite, it forms a ground-based navigation enhancement system for the satellite navigation system, increases the number of visible satellites for users, improves the geometric configuration of the observation satellite constellation, and enhances and improves the positioning accuracy, integrity and effectiveness of u...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the terminal simultaneously receives the pseudolite signal and the Beidou satellite signal and its processing, the present invention proposes a device and method for receiving and processing the Beidou terminal signal, wherein the device includes: an antenna unit, a radio frequency unit, a baseband Signal processing unit, information processing unit, power supply unit and display control unit;

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