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

Low-earth-orbit satellite orbit designing method for quickly revisiting discrete targets

A satellite orbit and discrete target technology, applied in the field of orbit configuration design of low-orbit satellite constellation networking

Inactive Publication Date: 2014-03-26
CHINA ACADEMY OF SPACE TECHNOLOGY
View PDF5 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For the satellite network configuration design method with the above characteristics that can quickly revisit discrete targets, there are no relevant public literature reports or patent reports at home and abroad.

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
  • Low-earth-orbit satellite orbit designing method for quickly revisiting discrete targets
  • Low-earth-orbit satellite orbit designing method for quickly revisiting discrete targets
  • Low-earth-orbit satellite orbit designing method for quickly revisiting discrete targets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0069] Aiming at a plurality of discretely distributed ground targets set in the global range, the present invention designs a low-orbit satellite orbit that can bring all the ground targets into the range of satellite reconnaissance, and can periodically reconnaissance the ground targets. Then, aiming at the shortest revisit time interval of ground targets, the optimal design of the time for each satellite in the constellation network to fly over the ground targets is carried out, and the optimal low-orbit satellite network structure for fast revisiting discrete targets is obtained. Type scheme.

[0070] (1) Randomly select multiple ground targets discretely distributed around the world

[0071] Randomly select 12 ground points discretely distributed around the world as reconnaissance targets, and the latitude and longitude distribution of each ground target is shown in Table 1:

[0072] Table 1 Randomly selected locations of 12 discretely distributed ground targets around t...

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

Disclosed is a low-earth-orbit satellite orbit designing method for quickly revisiting discrete targets. The method includes (1), determining an inclination angle of a satellite orbit, wherein the inclination angle is not lower than the highest latitude Lmax of a ground target; (2), selecting a round orbit as the satellite orbit, wherein eccentricity ratio is 0; (3), executing a reconnaissance mission according to the ground target, determining a regression cycle of the orbit, utilizing the regression cycle to determine a semi-major axis of the satellite orbit, and then determining height of the orbit; (4), according to corresponding orbit ascending node longitude when sub-satellite points of an orbit ascending section and an orbit descending section of the satellite orbit pass the ground target, respectively determining ideal satellite orbit ascending node longitude of the orbit ascending section and the orbit descending section, performing optimization aiming at enabling the sum of designed satellite orbit ascending node longitude and a difference value of the ideal satellite orbit ascending node longitude of the orbit ascending section and the orbit descending section of the ground target, and determining ascending node longitude of the satellite orbit to be L; (5), utilizing the orbit inclination angle, the round orbit and the eccentricity ratio thereof, the orbit height and the ascending node longitude of the satellite orbit to complete designing of the satellite orbit.

Description

technical field [0001] The invention relates to a method for designing an orbit configuration of a low-orbit satellite constellation network, which is suitable for designing an optimized constellation network orbit configuration for a plurality of specific ground targets discretely distributed in different locations around the world, so as to achieve The number of satellites provides the fastest repeatable reconnaissance of these discrete ground targets. Background technique [0002] Since the British Clark A C first proposed the concept of satellite constellation networking in the 1940s, a large number of documents have been published on the design of global coverage constellation networking, and have been applied in engineering practice, such as the US GPS navigation constellation, Iridium Communication Constellation etc. A lot of research has also been done on constellation networking issues covering key areas. Russia's Molniya communication constellation and my country'...

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): G01S17/74
CPCB64G1/10
Inventor 李志蒙波宋雨何宗波陈新龙黄剑斌
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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