Receiving and Processing Method of Spin Carrier Navigation Signal

A navigation signal and processing method technology, applied in satellite radio beacon positioning systems, instruments, measuring devices, etc., can solve problems such as difficulties in receiving and processing navigation signals, and achieve the effect of not being able to track and lock correctly

Active Publication Date: 2022-06-14
10TH RES INST OF CETC
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  • Description
  • Claims
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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

Method used

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  • Receiving and Processing Method of Spin Carrier Navigation Signal

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Embodiment Construction

[0011] refer to figure 1 . According to the present invention, 4 diversity GPS receiving antennas arranged at equal intervals of 90° form an array to form an omnidirectional pattern that can receive GPS signals at any angle, and respectively receive navigation signals through 4 independent signal receiving channels, and each GPS antenna receives After receiving the navigation signal, it is converted into a digital intermediate frequency signal through frequency conversion by the frequency converter of the receiving channel and sampled by the analog / digital converter ADC; each digital intermediate frequency signal is divided into two channels and sent to the digital receiver channel for processing, and one channel is sent to the channel through the source selection module The virtual channel completes carrier and pseudo code stripping, demodulation and decoding through the virtual channel; the other channel completes carrier and pseudo code tracking through the carrier loop and...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/37G01S19/30G01S19/28G01S19/25
CPCG01S19/37G01S19/30G01S19/28G01S19/256
Inventor 蒋文丰
Owner 10TH RES INST OF CETC
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