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

Inter-band calibration method of optical remote sensing satellite

An optical remote sensing and satellite technology, applied in the field of aerospace, can solve the problems that no effective literature and works have been found yet

Active Publication Date: 2021-04-16
SPACE STAR TECH CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the calibration between remote sensing satellite bands, no effective literature and works have been found

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
  • Inter-band calibration method of optical remote sensing satellite
  • Inter-band calibration method of optical remote sensing satellite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention will be described in detail below based on specific embodiments and with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] In the present invention, based on the synchronous measurement data of the optical remote sensing satellite-ground calibration field, the linear relationship between the real inversion radiance value and the apparent radiance value of the panchromatic band surface of the satellite camera is measured, and the real inversion radiance value of each band of the multi-spectrum is measured. It has a linear relationship with the apparent radiance value, and calculates the linear slope error between each band. The inter-band calibration reflects the ratio value relationship of the absolute calibration measurement results in different bands. Based on this concept, the inter-band calibrat...

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 an inter-band calibration method for an optical remote sensing satellite. The method comprises the following steps: determining the inter-band calibration precision of each camera of the optical remote sensing satellite; measuring earth surface real inversion radiance values of a panchromatic waveband and multispectral wavebands of the optical remote sensing satellite camera in a ground calibration field; for each surface real inversion radiance value, measuring an apparent radiance value of a corresponding optical remote sensing satellite image pixel, and calculating a linear relationship between the surface real inversion radiance value and the corresponding apparent radiance value; and determining a linear slope error between the wavebands based on the linear relationships. According to the inter-band calibration method of the optical remote sensing satellite, inter-band calibration of the optical remote sensing satellite can be realized.

Description

technical field [0001] The invention belongs to the field of aerospace technology, in particular to an inter-band calibration method for an optical remote sensing satellite. Background technique [0002] During the optical remote sensing satellite’s in-orbit period, for radiation calibration, scholars at home and abroad mainly use the satellite-ground calibration field synchronous measurement data to obtain the true retrieval radiance value and apparent The linear relationship of the radiance value is calculated, and then the absolute calibration coefficient of each band is calculated to perform the absolute radiation correction of the satellite data. For the calibration between remote sensing satellite bands, no effective literature and works have been found. [0003] The calibration between remote sensing satellite bands aims to obtain the accuracy of the absolute calibration results of each band after radiometric calibration, and whether it can meet the requirements of t...

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): G01M11/02G01S19/20G01C25/00G06F17/18
CPCY02A90/10
Inventor 方舟李岩李龙飞张轶男吕硕汪红强
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