Method for converting original measurement value of global positioning system into precise and uniform sampling in real time

A global positioning system and uniform sampling technology, applied in positioning, measuring devices, radio wave measuring systems, etc., can solve the problems of uneven sampling, inaccurate synchronization of GPS time system, etc., to achieve convenient real-time differential data and save interpolation And the effect of resampling, uniform sampling

Inactive Publication Date: 2010-09-15
INST OF ELECTRONICS CHINESE ACAD OF SCI
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for real-time conversion of the original measurement value of the global positioning system into accurate and uniform sampling, so as to solve the problem that the original measurement value collected by the GPS receiver is inaccurately synchronized with the GPS time system and the sampling is not uniform, so as to obtain the sample Uniform and GPS time-synchronized measured values

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
  • Method for converting original measurement value of global positioning system into precise and uniform sampling in real time
  • Method for converting original measurement value of global positioning system into precise and uniform sampling in real time
  • Method for converting original measurement value of global positioning system into precise and uniform sampling in real time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] A method for converting global positioning system (GPS) raw measurement values ​​into accurate uniform sampling in real time, comprising:

[0022] Step 1: Extract the time difference between the receiver time system and the GPS time system in real time from the GPS receiver: receiver clock difference, or calculate the receiver clock difference in real time according to the pseudorange measurement value received by the receiver;

[0023] Step 2: extract the Doppler measurement value received by the receiver in real time from the GPS receiver;

[0024] Step 3: According to the clock error and Doppler measurement value of the receiver, the pseudo-range measurement value and carrier phase measurement value collected by the GPS receiver in real time are corrected in real time according to different correction methods, and the strict synchronization with the GPS time system is obtained. Evenly spaced pseudorange measurements and carrier phase measurements.

[0025] The metho...

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 for converting an original measurement value of a global positioning system (GPS) into a precise and uniform sampling and relates to the global positioning technology. In the method, pseudo-range measurement and a carrier phase measurement value which are acquired by a receiver in real time are modified respectively by using a clock error (time difference between receiver time and GPS time) which is calculated by a GPS receiver in real time and a Doppler value which is measured in real time, so that the uniformly-sampled pseudo-range measurement and the carrier phase measurement value which are precisely synchronous with the GPS time can be obtained, and the original measurement value which is acquired by the GPS receiver in real time is converted into the uniformly-sampled measurement value which is precisely synchronous with the GPS time system. Due to the smart application of an internal relation among the receiver clock error, the Doppler valve and the GPS original measurement valve, the real-time acquisition of precise and uniformly sampled original measurement valves of pseudo-range, carrier phase and the like is realized, and the work of processing GPS data such as real-time positioning, orientation and the like is greatly facilitated.

Description

technical field [0001] The invention relates to the global positioning technology, and is a method for converting the original measurement value of the global positioning system into accurate and uniform sampling in real time. Background technique [0002] With the deepening of the technology and application of the Global Positioning System (GPS, Global Positioning System), real-time positioning and orientation using GPS has become an important means in military affairs, scientific research, and life. Since the typical positioning accuracy of a single GPS receiver can only reach 5-10 meters (medium error), the actual high-precision (sub-meter level, centimeter level) applications require two or more GPS receivers for synchronous observation and This is achieved by differential processing. [0003] When two or more GPS receivers are used for synchronous observation and data processing, the original measurement values ​​of two or more GPS receivers are required to be accurate...

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): G01S5/02
Inventor 尤红健
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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