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

Anti-multipath method for receiving BOC navigation signal without ambiguity

A navigation signal and receiving signal technology, applied in the field of BOC navigation signal processing, to achieve strong practicability and improved anti-multipath performance

Inactive Publication Date: 2018-11-27
SPACE STAR TECH CO LTD
View PDF10 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the invention is to solve the problem of how to improve the multipath suppression performance of the dual estimation technology while tracking the received BOC navigation signal for the above-mentioned problems existing in the current BOC received signal

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
  • Anti-multipath method for receiving BOC navigation signal without ambiguity
  • Anti-multipath method for receiving BOC navigation signal without ambiguity
  • Anti-multipath method for receiving BOC navigation signal without ambiguity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Hereinafter, the present invention will be described in detail based on the drawings.

[0022] Such as figure 2 As shown, the present invention provides an anti-multipath method for receiving BOC navigation signals without ambiguity, and the method includes a spreading code tracking loop and a subcarrier tracking loop. Specifically, the subcarrier tracking loop includes an integral accumulation module, a subcarrier loop discriminator, a filter, a subcarrier loop numerically controlled oscillator NCO, and a subcarrier tracking loop subcarrier generator. The spread spectrum code tracking loop includes an integral accumulation module, a spread spectrum code tracking loop discriminator, a filter, a spread spectrum code loop numerically controlled oscillator NCO, a spread spectrum code generator and a spread spectrum code tracking loop subcarrier generator. The spreading code tracking loop and the subcarrier tracking loop respectively track the spreading code signal and su...

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 an anti-multipath method for receiving a BOC navigation signal without ambiguity. The anti-multipath method comprises the following steps: generating an advance subcarrier signal, an instant subcarrier signal and a lag subcarrier signal by a subcarrier tracking ring; generating an advance spreading code signal, an instant spreading code signal and a lag spreading code signal by a spreading code tracking ring; multiplying the advance spreading code signal and the lag spreading code signal with the instant subcarrier signal separately to generate an advance local multiplesignal and a lag local multiple signal of the spreading code tracking ring for tracking an input BOC receiving signal; multiplying the instant subcarrier signal generated by the spreading code tracking ring with an instant spreading code signal to generate a BOC (n, n) signal, and summing up the BOC (n, n) signal and the instant spreading code signal to generate a corrected local spreading code signal for being input to the subcarrier tracking ring; separately multiplying the advance subcarrier signal and the lag subcarrier signal with the corrected local spreading code signal through the subcarrier tracking ring to generate the advance local multiple signal and the lag local multiple signal of the subcarrier tracking ring for tracking the input BOC receiving signal. The anti-multipath method can achieve effective suppression on a multipath signal, and improves the multipath resistance.

Description

technical field [0001] The invention belongs to the technical field of BOC navigation signal processing, and relates to an anti-multipath method for receiving navigation signals without ambiguity. Background technique [0002] BOC modulation is a newly proposed signal modulation method. Because of its superior characteristics, it has become a main modulation method of navigation signals. The correlation function of the BOC modulation signal has multi-peaks, and it is very easy to mistakenly lock on the secondary peak by using the commonly used delay-locked loop to track directly, that is, tracking blur occurs. The unambiguous tracking techniques of BOC signal include peak hopping method, BPSK-like algorithm and subcarrier phase elimination method, ASPECT algorithm and double estimation technology. Because the double estimation technology can realize the full-precision unambiguous tracking of the BOC modulated signal, and is easy to implement, the unambiguous tracking techno...

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 Applications(China)
IPC IPC(8): G01S19/22G01S19/37
CPCG01S19/22G01S19/37
Inventor 阮建涛王盾俞能杰董启甲
Owner SPACE STAR TECH CO LTD
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