Processing method of satellite signal tracking loop assisted by inertial information

A tracking loop and inertial assistance technology, which is applied in satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve the problems of limited satellite navigation system applications, user equipment cannot be obtained normally, and positioning information cannot be generated. Simple application, improved performance and tracking sensitivity, easy engineering effects

Active Publication Date: 2017-05-31
BEIJING AUTOMATION CONTROL EQUIP INST
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of the signal's susceptibility to interference and the high dynamics of the carrier, the user equipment cannot norma

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Processing method of satellite signal tracking loop assisted by inertial information
  • Processing method of satellite signal tracking loop assisted by inertial information
  • Processing method of satellite signal tracking loop assisted by inertial information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] A method for using inertial information to assist satellite receiver tracking loop processing according to the present invention will be described in detail below in combination with specific embodiments.

[0063] The present invention uses inertial information to assist satellite receiver tracking loop processing method, comprising the following steps:

[0064] Step 1. In the case of no inertial information assistance, use the traditional tracking loop; in the case of inertial information assistance, use the tracking loop in the form of inertial assistance; the switching of the two loops is determined by whether there is inertial information;

[0065] Step 2, the carrier acceleration information output by the inertial navigation is used as the inertial auxiliary information, and the acceleration information is converted into the line-of-sight acceleration information of each tracking satellite;

[0066] Step 3. The line-of-sight acceleration information of each star is...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the field of satellite receiver baseband signal processing, and relates to a processing method of a satellite receiver tracking loop assisted by inertial information. According to the invention, accelerated speed information output by inertial navigation is used to assist the satellite receiver tracking loop to reduce the dynamic stress error of a carrier tracking loop; the equivalent noise bandwidth of the tracking loop can be reduced; long-time coherent integration is realized; the thermal noise error of the loop can be reduced; the tracking performance of the loop for a low carrier-to-noise ratio signal is improved; the realization form of the satellite signal tracking loop under the assistance of inertia information is disclosed; the calculation of the loop assistance quantity of the inertia information, the loop filter order, the loop filter bandwidth, the loop filter realization structure and the loop filter switching application form are mainly comprised; the tracking dynamic performance of a satellite receiver is improved; and the sensitivity of the receiver is improved.

Description

technical field [0001] The invention belongs to the field of baseband signal processing of satellite receivers, and relates to a tracking loop processing method for assisting satellite receivers by using inertial information. Background technique [0002] Inertial navigation system has become an indispensable and important part in the fields of aviation, spaceflight, navigation, land navigation and geodesy due to its outstanding advantages such as autonomy, strong concealment, all-weather, anti-interference, large output information, and strong real-time output information. , but its high precision will decrease with time. [0003] Satellite navigation system (GPS, GLONASS, Beidou, etc.) is a high-precision navigation and positioning system that can provide users with information such as longitude, latitude, altitude, speed, and time, and has been widely used in military and civilian fields. However, due to the limitations of the signal's susceptibility to interference and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01S19/37
CPCG01S19/37
Inventor 左启耀李育龙胡文涛李峰王黎斌刘峰
Owner BEIJING AUTOMATION CONTROL EQUIP INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap