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

Positioning method for intermediate orbit satellite search and rescue system

A technology of orbit satellite and positioning method, which is applied in the field of satellite search and rescue system positioning, and can solve the problems that low-orbit search and rescue systems cannot locate and position in real time

Active Publication Date: 2011-06-08
SPACE STAR TECH CO LTD
View PDF1 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problem that the low-orbit search and rescue system cannot locate in real time and has low positioning accuracy

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
  • Positioning method for intermediate orbit satellite search and rescue system
  • Positioning method for intermediate orbit satellite search and rescue system
  • Positioning method for intermediate orbit satellite search and rescue system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] A comprehensive positioning method for a mid-orbit search and rescue system according to the invention is used for positioning a distress beacon.

[0033] 1. Principle introduction

[0034] When a ship, vehicle, or aircraft equipped with a beacon is in distress, the trigger device can be used to activate the launch of the beacon (for example, the navigation beacon on the ship will automatically trigger when it is subjected to a certain water pressure). International search and rescue organizations have agreed on a frequency for search and rescue beacons, namely 406MHz. The beacon signal is uplinked to the medium-orbit satellite. The satellite platform is equipped with a transponder for the beacon signal, which converts the frequency of the search and rescue signal to a radio frequency (L-band or S-band). After the frequency band, it is transmitted from the downlink channel to the ground receiving station.

[0035] Aiming at the characteristics of the search and rescue ...

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 relates to a positioning method for an intermediate orbit satellite search and rescue system. The method comprises the following steps of: carrying out time and frequency joint positioning processing on a beacon by utilizing search and rescue signals forwarded by multiple satellites to position the beacon; and then carrying out continuous burst processing by utilizing a search and rescue signal sent in a beacon lasting period to realize the persistent improvement of a beacon positioning result. The method is suitable for the intermediate orbit satellite search and rescue system and has the characteristics of short positioning time and high positioning precision.

Description

technical field [0001] The invention relates to a positioning method for a satellite search and rescue system, in particular to a positioning method for a mid-orbit satellite search and rescue system. Background technique [0002] At present, the satellite search and rescue system applied to the 406MHz distress beacon is a low-orbit satellite search and rescue system. The main positioning principle is to use the Doppler frequency of the search and rescue beacon measured by a single low-orbit satellite at different positions, and combine the positioning equation to obtain Beacon location. Typically, solving an equation results in two solutions, the actual solution and the mirrored solution. Through the prior test method, the mirror image solution is screened out with a higher probability, and the real solution is obtained. [0003] The disadvantage of low-orbit search and rescue systems is the long positioning reaction time due to the need to measure Doppler frequencies at ...

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): G01S19/42
Inventor 刘绍波林墨张云杰
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