Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A digital non-integer tracking loop for satellite positioning and navigation receiving system

A technology of receiving system and tracking loop, which is applied in the field of tracking loop, can solve the problems of using high sampling rate, etc., and achieve the effect of fine time resolution

Active Publication Date: 2016-05-18
付寅飞
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to propose a digital non-integer tracking loop for a satellite positioning and navigation receiving system, which can solve the problem that the receiver needs to use a high sampling rate

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
  • A digital non-integer tracking loop for satellite positioning and navigation receiving system
  • A digital non-integer tracking loop for satellite positioning and navigation receiving system
  • A digital non-integer tracking loop for satellite positioning and navigation receiving system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] In the following, the present invention will be further described in conjunction with the drawings and specific embodiments.

[0043] combine image 3 with Figure 4 As shown, a digital non-integer tracking loop for a satellite positioning and navigation receiving system includes a first mixer 402, a second mixer 403, a correlator group 404, a code phase detector 405, and a code loop Filter 406, PN code generator 409, carrier phase detector 408, carrier loop filter 407, carrier NCO413, sin mapping unit 411, cos mapping unit 410, decimal interpolation filter 401, first adder 415, calibration A control unit 412 , a scaling factor unit 416 , a phase adjuster 414 and a second adder 417 . The illustrated bank of correlators 404 consists of six correlators.

[0044] The output terminals of the first mixer 402 and the second mixer 403 are connected to the first input terminal of the correlator group 404, and the first output terminal of the correlator group 404 passes throu...

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 relates to a digital non-integer tracking loop for a satellite positioning and navigation receiving system. According to the scheme, phase offset between a received signal and a local duplication code can be divided into integer offset and decimal offset, fraction type interpolation is carried out on the received medium frequency wireless signal through a filter of a Farrow structure, and then a carrier component in the signal is removed. If one integer offset exists, the local duplication code shifts smoothly according to the integer offset. The correlation operation is carried out between an early duplicate of the local duplication code and the interpolated received signal and between a later duplicate of the local duplication code and the interpolated received signal. By interpolation on the received signal, extremely fine time definition can be achieved, and a low sampling rate is kept.

Description

technical field [0001] The invention relates to a satellite positioning and navigation receiver system, in particular to a tracking loop in a GPS system. The present invention also supports other satellite positioning and navigation receiver systems such as Galileo or Beidou, or multi-mode satellite positioning receivers. Background technique [0002] Satellite positioning navigation systems use multiple satellites to send precise navigation signals that enable a receiver to determine its current position and velocity through triangulation. The receiver estimates the transit time of the signal from the satellite to the receiver, and then calculates the position of the satellites and their distance from the receiver. [0003] GPS is a full-featured global positioning navigation system developed by the US Department of Defense. Each satellite can simultaneously transmit signals on the frequency points of L1 (1575.72MHz) and L2 (1227.6MHz). The L1 signal carries navigation i...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/37G01S19/30
CPCG01S19/29G01S19/30G01S19/37
Inventor 付寅飞杨乐李秀魁
Owner 付寅飞
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com