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An Inertial Information Assisted Satellite Deep Combination Loop

A loop and inertial technology, applied in satellite radio beacon positioning systems, instruments, measuring devices, etc., can solve the problems of difficult signal processing, limited application of satellite navigation systems, and satellite signals are susceptible to interference, and achieve continuous and reliable operation. The effect of the algorithm application is simple, reliable parameter optimal design

Active Publication Date: 2021-10-19
BEIJING AUTOMATION CONTROL EQUIP INST
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AI Technical Summary

Problems solved by technology

Satellite navigation is a passive navigation method that relies entirely on the availability of satellite signals. However, due to the susceptibility of satellite signals to interference and the difficulty of signal processing caused by the high dynamics of the carrier, the application of satellite navigation systems is limited.

Method used

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  • An Inertial Information Assisted Satellite Deep Combination Loop
  • An Inertial Information Assisted Satellite Deep Combination Loop
  • An Inertial Information Assisted Satellite Deep Combination Loop

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Embodiment Construction

[0055] The present invention will be further described below by means of the accompanying drawings and specific embodiments.

[0056] Inertial information-assisted satellite receiver data fusion processing algorithm is a design method of satellite signal carrier tracking loop assisted by inertial information. Aiming at the reliability of carrier loop design and the optimality of tracking performance, it mainly involves the design of two aspects: Carrier tracking loop implementation structure and loop adaptive parameter adjustment algorithm.

[0057] The inertial information assisted satellite deep combined loop designed in the present invention is composed of two parts: an inertial information discrimination tracking loop and an inertial information assisted tracking loop.

[0058] The inertial information discrimination tracking loop uses a second-order frequency-locked loop to maintain tracking of a satellite. The satellite to be tracked should be the satellite with the lar...

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Abstract

The field of satellite navigation receiver design of the present invention specifically discloses an inertial information assisted satellite deep combination loop, which includes an inertial information assisted tracking loop and an inertial information discrimination tracking loop, and the inertial information assisted tracking loop includes an inertial information assisted tracking loop The auxiliary information anomaly discrimination module connected to the output end of the information discrimination tracking loop, the inertial acceleration auxiliary module, the loop optimal bandwidth calculation module, the equivalent carrier-to-noise ratio calculation module, the interference-to-signal ratio estimation module and the loop PIT adjustment module, also include a correlator, and a three-way loop connected to the output of the correlator. Considering the full integration of inertial information and satellite navigation information, the reliable design and optimal parameter design of satellite receivers are realized. The algorithm is simple to apply, without complex or huge calculation formulas. The real-time and calculation can be guaranteed in DSP or Algorithm programming implementation on FPGA hardware platform, that is, easy engineering implementation.

Description

technical field [0001] The invention belongs to the design field of satellite navigation receivers, and in particular relates to an inertial information auxiliary satellite deep combination loop for improving the performance of a satellite navigation receiver by inertial auxiliary information. Background technique [0002] The inertial navigation system has become an indispensable and important part of the fields of aviation, aerospace, navigation, land navigation and geodesy. It has outstanding advantages such as autonomy, strong concealment, all-weather, anti-interference, large output information, and strong real-time output information. , but its disadvantage is that the accuracy will decrease with time. Satellite navigation system (GPS, GLONASS, Beidou, etc.) is an all-weather, real-time, high-precision navigation and positioning system that provides users with position, speed, and time information, and has been widely used in military and civilian fields. Satellite na...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/31
CPCG01S19/31
Inventor 左启耀李峰李育龙胡文涛洪诗聘祖秉法刘峰
Owner BEIJING AUTOMATION CONTROL EQUIP INST
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