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

Real time resolving method for satellite laser distance measuring multiple pulse fuzzy degree

A satellite laser ranging and multi-pulse technology, applied in the field of satellite laser ranging resolution, can solve problems such as ambiguity, achieve high observation efficiency, ensure output energy, and improve the effect of target acquisition rate

Active Publication Date: 2009-04-01
INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

figure 1 It shows the test observation data of a lap of the Lageos satellite, there are 5 to 7 observation lines, but it is not known which observation line is correct, that is, the fuzzy problem that needs to be determined

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
  • Real time resolving method for satellite laser distance measuring multiple pulse fuzzy degree

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] 1. About the method of extrapolation

[0027] The extrapolated bias increases over time and varies with the number of stations, data quality and quantity acquired from other stations.

[0028] When the elapsed time is 0 (that is, no extrapolation), when the LAGEOS satellite data of 1 / 3 of the world's stations are obtained, the deviation can reach the centimeter level. However, for different satellites and different observation data, it is indeed difficult to ensure that the deviation is less than 0.6 meters within 24 hours, which needs to be verified by experiments, even if this requirement cannot be met. By shortening the extrapolation time, it is possible for us to obtain the latest data at any time because the observational data is online in real time, so that it may only take 2 hours or less to extrapolate. Or wait for a period of time (such as half a day) to solve the ambiguity problem, which may not require extrapolation, but it will affect the real-time nature o...

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

This invention discloses a real time calculation method for multi-pulse fuzziness in the distance test of satellite laser, which utilizes the global information got in real time and the extrapolate satellite theory orbit to compare it with the actual test result to determine the true value from multiple fuzzy values, 1, getting observation data of part of SLR observation stations of the globe and instant star calendar from the network, 2, utilizing relative software and instant observation data to compute the satellite theory distance value of the latter period of time, 3, applying the precise orbit extrapolation method to select a correct value from the multiple values.

Description

technical field [0001] The invention relates to a solution method for satellite laser ranging, in particular to a real-time solution method for multi-pulse ambiguity. Background technique [0002] Satellite laser ranging (Satellite Laser Ranging, SLR for short) uses the measurement of the round-trip propagation time of the laser between the ground and the satellite for ranging. The main difference between GPS (Global Positioning System), SAR (Synthetic Aperture Radar), etc.]. SLR can calculate the absolute distance with only a single measurement, and has the technical characteristics that the measurement accuracy is basically irrelevant to the measured distance. These characteristics determine its irreplaceable position in the field of space measurement technology. At present, the space measurement technology mainly based on VLBI, SLR, GPS and SAR has developed rapidly. Using it to monitor the crustal movement is the active research of geodynamics, the earth's gravity field...

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): G01S17/08
Inventor 郭唐永乔学军杜瑞林李欣王培源
Owner INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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