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

Structure of base band circuit for realizing double frequency GPS satellite signal receiver and method thereof

A satellite signal and baseband circuit technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc., can solve the obstacles to the large-scale popularization and application of GPS navigation technology, the performance is difficult to achieve stable and reliable, and the complex circuit structure and other problems, to achieve the effects of stable and reliable working performance, improved anti-interference performance, and simple circuit structure

Inactive Publication Date: 2010-05-19
SHANGHAI HUACE NAVIGATION TECH
View PDF0 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods all need to be at the expense of complex circuit structures and high-performance processors, not only the cost is high, but also the performance is difficult to achieve stable and reliable, which brings certain obstacles to the large-scale popularization and application of GPS navigation technology.

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
  • Structure of base band circuit for realizing double frequency GPS satellite signal receiver and method thereof
  • Structure of base band circuit for realizing double frequency GPS satellite signal receiver and method thereof
  • Structure of base band circuit for realizing double frequency GPS satellite signal receiver and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0042] see Figure 1 to Figure 3 As shown, the baseband circuit structure of the dual-frequency GPS satellite signal receiver includes signal preprocessing circuits and several satellite processing channels. The number of satellite processing channels is consistent with the number of tracked satellites, usually 12 .

[0043] At the same time, it should be pointed out that the baseband part of the signal in the present invention is sent to 12 satellite processing channels at the same time after preprocessing, where the 12 channels are completely the same, and the number of channels can be expanded or reduced according to needs and FPGA capacity. Since the structures of the 12 channels are exactly the same, only for tracking different satellites at the same time, only the structure of one channel is discussed in the present invention. figure ...

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

PropertyMeasurementUnit
Bit widthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a structure of base band circuit for realizing double frequency GPS satellite signal receiver. The base band circuit mainly comprises an L1 processing circuit and an L2 processing circuit, the input end is connected with the output of a radio-frequency circuit, and the output end is connected with a central processing module. The L1 processing circuit mainly comprises an L1C / A code track loop module, an L1 carrier wave track loop module, an L1W cycle estimation module and an L1P code generation module; the L2 processing circuit comprises an L2 carrier wave track loop module, an L2P track loop module, an L2W estimation module, an L1 and L2 cross multiplier and an L2 correlator. The L1 and L2 cross multiplier and the L2 correlator are designed and realized in a DSP module built in an FPGA circuit module. The invention also relates to a method for realizing signal track on GPS L2 channel by the structure of base band circuit. By adopting the structure of base band circuit for realizing double frequency GPS satellite signal receiver and the method thereof, the velocity and performance of the system are improved greatly, the system scale and cost are reduced, the anti-interference performance of the receiver is enhanced, the circuit structure is simple, the working performance is stable and reliable, and the application range is wide.

Description

technical field [0001] The present invention relates to the field of GPS navigation, positioning and measurement, in particular to the technical field of a dual-frequency GPS (Global Positioning System) satellite signal receiving and processing device, in particular to a baseband circuit structure and method for realizing a dual-frequency GPS satellite signal receiver. Background technique [0002] Satellite navigation is to receive the navigation positioning signal sent by the navigation satellite, and use the navigation satellite as a dynamic known position to measure the current position and speed in real time. Wherein it relates to the L2 signal acquisition and tracking method of the dual-frequency GPS receiver in the field of GNSS (Global Navigation Satellite System, ie Global Navigation Satellite System). GPS satellite signals are usually spread-spectrum modulated using a pseudo-random code (PRN). GPS satellite signals mainly include C / A code (Coarse, civil code) 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): G01S19/13G01S19/30
CPCG01S19/30G01S19/29G01S19/32
Inventor 宋阳王永泉朱亚宁刘杰王杰俊刘若普
Owner SHANGHAI HUACE NAVIGATION TECH
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