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

A navigation signal acquisition method and device

A technology for navigation signals and navigation data, which is applied to measurement devices, satellite radio beacon positioning systems, instruments, etc., can solve the problems of low computing efficiency, increased acquisition complexity, and difficult engineering practice, and achieves extended coherent integration time, The effect of improving capture sensitivity and reducing the number of calculations

Active Publication Date: 2019-06-28
DATANG SEMICON DESIGN
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be clearly seen that the "full bit method" needs to calculate 20 sets of data, but only one of the data is finally used, and the calculation efficiency is very low, resulting in a greatly increased capture complexity, which is difficult to use in engineering practice

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 navigation signal acquisition method and device
  • A navigation signal acquisition method and device
  • A navigation signal acquisition method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0042] image 3 It is a flowchart of a navigation signal acquisition method provided by an embodiment of the present invention. Such as image 3 As shown, the navigation signal acquisition method provided in this embodiment is applied to a receiver and includes the following steps:

[0043] Step 301: selecting data segments to be processed from the data sequence obtained after frequency mixing and correlation processing, and delaying the data segments to be processed by one delay step in order to obtain N data groups;

[0044] Wherein, the data segment to be processed includes at least one data segment whose navigation data bit length is Data_Len milliseconds, and Data_Len...

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 discloses a method and a device for capturing navigation signals. The method comprises steps: to-be-processed data segments are selected, the to-be-processed data segments are delayed sequentially for a delay step, and N data groups are obtained; the coherent integral value of each data group is acquired, and the first largest coherent integral value, a left neighbor coherent integral value and a right neighbor coherent integral value are determined; when the absolute value of the difference between the left neighbor coherent integral value and the right neighbor coherent integral value is smaller than or equal to a threshold value, the first largest coherent integral value is determined to be the coherent integral value not including navigation data bit hopping and can be used for capturing and deciding the navigation signals; and when the absolute value of the difference between the left neighbor coherent integral value and the right neighbor coherent integral value is larger than the threshold value, through comparing the left neighbor coherent integral value and the right neighbor coherent integral value, a fine searching direction is determined, and through the fine searching, the coherent integral value not including the navigation data bit hopping is determined. Thus, the computational efficiency during the navigation signal capturing process can be improved, and the signal-to-noise ratio gains are improved.

Description

technical field [0001] The invention relates to a navigation signal receiving technology, in particular to a navigation signal acquisition method and device. Background technique [0002] Navigation technology has always played an important role in the development of human history, and with the continuous progress of society, satellite navigation and positioning technology is more and more closely related to our lives. At present, the main satellite navigation systems in the world include Global Positioning System (GPS, Global Positioning System), Beidou Second Generation (BD2), Russia's Global Navigation Satellite System (GLONASS, GLObal NAvigation Satellite System) and Galileo (Galileo) system, etc. Among them, both GPS and BD2 use Code Division Multiple Access (CDMA, Code Division Multiple Access) technology, and their physical layer frame structures have many similarities, so they are similar in receiver design, including RF front-end processing, baseband There are thre...

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): G01S19/24
CPCG01S19/24
Inventor 宋挥师刘晓燕徐雄伟刘航赵海龙孙涛
Owner DATANG SEMICON DESIGN
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