Receiving and Processing Method of Spin Carrier Navigation Signal

Abstract

A method for receiving and processing a navigation signal of a spinning carrier proposed by the present invention aims to provide a method for receiving and processing that can complete GPS satellite navigation and positioning when the carrier rotates. The present invention is realized through the following technical solutions: 4 diversity GPS receiving antennas form an array to receive navigation signals through 4 independent signal receiving channels, and the intermediate frequency signal converted by frequency conversion and ADC sampling is divided into two channels, and one channel completes the carrier and pseudo The code stripped navigation signal is input to the SNR calculation unit, and the other channel is sent to the virtual channel, and the channel with the largest SNR is selected as the current navigation signal to be processed; the signal splicing of the navigation signal when the carrier rotates is completed by using signal processing software in the virtual channel , get a signal with a unified phase, measure the propagation time of the GPS signal from the satellite to the receiver antenna, interpret the navigation message sent by the GPS satellite, and calculate the carrier's position, speed and current time in real time.

Description

technical field [0001] The invention relates to a technology for receiving and processing navigation signals of a spinning carrier, which implements a method for continuously receiving and processing navigation signals in a 360° rotating state of a carrier through a signal processing algorithm. Background technique [0002] With the continuous development of positioning technology, the positioning requirements for various types of carriers are becoming more and more abundant. In addition to locating low-speed targets, it is also necessary to locate targets in states such as high dynamics, weak signals, and strong interference. The global satellite navigation and positioning receiving system (GPS) is more and more used as a ballistic sensor in various new carriers because it can provide parameters such as real-time position and velocity information of projectiles. However, when the carrier is rotating, the navigation signal processing equipment works During the process, the ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the difficulty of receiving and processing navigation signals in the state of carrier rotation, the purpose of the present invention is to provide a method for receiving and processing spin carrier navigation signals that can reduce the impact of carrier rotation on speed measurement accuracy and can significantly improve the accuracy of GPS satellite navigation and positioning

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