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

Disc projection and splicing method for large view field space to ground observation images

A technology of earth observation and large field of view, applied in the field of space remote sensing detection, can solve problems such as no solution

Active Publication Date: 2017-06-27
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For large field of view, disk projection and stitching methods for images of different observation modes, there is currently no solution

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
  • Disc projection and splicing method for large view field space to ground observation images
  • Disc projection and splicing method for large view field space to ground observation images
  • Disc projection and splicing method for large view field space to ground observation images

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention should not be limited thereto.

[0024] Take the large-field-of-view far-ultraviolet imager on a polar sun-synchronous orbit as an example: the height of the sun-synchronous orbit is H=830km, and the projection reference spherical radius R r =6485.0km, the average radius of the earth R E =6375.0km, projected spherical spatial resolution Δ=10km, instrument cross-track field of view F 1 =130°, the field of view angle F of the instrument along the track 2 =10°, principal distance f=18.18mm, detector virtual pixel size Δ d = 0.035 mm. The working modes of the instrument include: the staring imaging mode between the magnetic latitude ±60°, the optical axis of the instrument points to the center of the earth; the area of ​​the magnetic latitude of the north and south poles is greater than 60° or less than ...

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 disc projection and splicing method for large view field space to ground observation images and belongs to the space remote sensing detection technology field. The method mainly comprises steps that a conversion matrix between a geocentric coordinate system GEO and a projection disc coordinate system OPC is calculated; a disc projection grid is established on a reference spherical surface in the OPC coordinate system; latitudes and longitudes of grid points and a grid center point are calculated and are then further converted to the GEO coordinate system; the actual projected image point number of two-dimensional array Np storage grid points and a main intensity value of actual projected image points of the two-dimensional array Np storage grid points are calculated; a look vector under each image point satellite coordinate system is calculated and is gradually converted to the OPC coordinate system, and a projection image data matrix, a grid point geographical latitude and longitude data matrix and a grid point center geographical latitude and longitude data matrix are lastly acquired. The method is advantaged in that time sequence observation images are projected and spliced to one grid of the reference spherical surface, so spatial distribution of observation objects can be actually and accurately described through the projection images.

Description

technical field [0001] The invention belongs to the technical field of space remote sensing detection, and in particular relates to a disk projection and splicing method of large field of view space earth observation images. Background technique [0002] The ionosphere refers to the atmosphere 60km to 1000km above the earth's surface. Its main components include electrons, oxygen ions (accounting for more than 80%), hydrogen ions, helium ions and other trace heavy ions. The ion components are mainly composed of ultraviolet and X in the sun. Radiation-induced control of photochemical processes is generally electrically neutral. The main characteristics of the ionosphere are reflection, scattering, absorption and refraction of radio waves passing through the ionosphere. Changes in the ionosphere will affect radio waves propagating in the ionosphere, thereby affecting ground communications, satellite communications, and satellite navigation. Under the action of solar radiatio...

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): G06T3/00G06T3/40
CPCG06T3/4038G06T3/08
Inventor 何飞陈波
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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