Infrared-spectrum satellite full-dynamic range multipoint radiance calibration device and calibration method

A radiometric calibration and infrared spectrum technology, which is applied to the field of full dynamic range multi-point radiometric calibration devices on satellites in the infrared spectrum, can solve the problem that the calibration point selection interval is large, the radiometric calibration accuracy is difficult to improve, and the detector dynamics cannot be covered. range and other issues, to achieve the effect of improving on-board calibration accuracy, good stability and heat dissipation capacity

Active Publication Date: 2012-09-19
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
View PDF3 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these devices can only provide the irradiance values ​​corresponding to several specific temperature points, the calibration points are selected at large intervals, and often cannot cover the entire dynamic range of the detector.
This

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
  • Infrared-spectrum satellite full-dynamic range multipoint radiance calibration device and calibration method
  • Infrared-spectrum satellite full-dynamic range multipoint radiance calibration device and calibration method
  • Infrared-spectrum satellite full-dynamic range multipoint radiance calibration device and calibration method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A full dynamic range multi-point radiometric calibration device on a star in the infrared spectrum, such as figure 1 As shown, the calibration device is fixed in the optical system of the space infrared camera; the satellite supplies power to the temperature control circuit;

[0028] The calibration device includes a temperature control circuit, a calibration light source A and a calibration light source B, a calibration optical component, a temperature sensor and a package shell; a temperature control circuit, a calibration light source A, a calibration light source B and a package for the calibration optical component The shell is packaged; the temperature sensor is installed on the package shell; wherein, the temperature control circuit includes a programmable logic device (FPGA), an analog / digital converter (A / D), a digital / analog converter (D / A) and an operational amplifier ; The calibration optical component is facing the radiation emission direction of the calibr...

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

PropertyMeasurementUnit
Wavelengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to an infrared-spectrum satellite full-dynamic range multipoint radiance calibration device and an infrared-spectrum satellite full-dynamic range multipoint radiance calibration method, and belongs to the technical field of remote sensing quantitative application. The calibration device is fixed in a camera optical system to be calibrated. A satellite supplies power to a temperature control circuit. The calibration device comprises the temperature control circuit, a calibration light source, a calibration optical component, a temperature sensor and a package, wherein the temperature control circuit, the calibration light source and the calibration optical component are packaged by the package; and the temperature control circuit comprises a programmable logic device, an analogue/digital converter, a digital/analogue converter and an operational amplifier. The temperature control circuit can provide different irradiance values for a focal plane, and the calibration light source adopts a nickel-chromium alloy and a combined design, so that high stability and radiation capability under the heating of current of different levels are ensured, an irradiance level covering a full dynamic range can be generated, and satellite calibration accuracy is directly improved.

Description

technical field [0001] The invention relates to a full dynamic range multi-point radiation calibration device and a calibration method on an infrared spectrum segment satellite, and belongs to the technical field of remote sensing quantitative application. Background technique [0002] The radiometric calibration of space remote sensing cameras is an essential technical means to realize the quantitative application of space remote sensor data and ensure the good performance of space remote sensors in orbit. The radiometric calibration of space remote sensing cameras can be roughly divided into pre-launch calibration and post-launch on-orbit calibration according to the time axis of the calibration task. Calibration before launch mainly refers to laboratory calibration or flight calibration, and calibration after launch mainly refers to on-board calibration using the calibration device installed in the space camera, site calibration using the ground calibration field, Perfor...

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): H04N17/00H04N5/33
Inventor 周峰吴立民龙亮刘兆军张涛张寅生胡斌王彬张文昱
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap