Internal and external calibration method used for radiometer imaging

A radiometer and internal calibration technology, applied in the field of internal and external calibration of radiometer imaging, can solve the problems of complex test equipment and test environment, long test time, and low efficiency

Active Publication Date: 2018-05-04
BEIJING INST OF REMOTE SENSING EQUIP
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an internal and external calibration method for radiometer imaging, which solves the problems of com

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
  • Internal and external calibration method used for radiometer imaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] The specific steps of an internal and external calibration method for radiometer imaging are:

[0053] The first step is to build an internal and external calibration system

[0054] Internal and external calibration system, including: system frame device 1, quasi-optical device 2, radiometer array device 3, radiometer array calibration device 4, data collector 5, data processor 6, electronic control device 7 and display control module 8 .

[0055] The system frame device 1 provides structural support; the electric control device 7 is connected with the quasi-optical device 2 and the radiometer array calibration device 4; the output end of the radiometer array device 3 is connected with the signal input end of the data collector 5; The output end is connected to the signal input end of the data processor 6; the signal output end of the data processor 6 is connected to the signal input end of the display control module 8.

[0056] The functions of the display and contr...

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 an internal and external calibration method used for radiometer imaging. An internal and external calibration system comprises a system frame device (1), a quasi optical device (2), a radiometer array device (3), a radiometer array calibration device (4), a data collector (5), a data processor (6), an electric control device (7) and a display control module (8). Among the devices, a millimeter wave focal plane array imaging technology is employed, radiometers and feed source antenna arrays are utilized to cover a horizontal field of view and reflector mechanic scanning is utilizedto cover a vertical field of view, and the resolution of a near field imaging space is increased through ellipsoidal focusing antennas. Through the radiometer array calibration device (4) among the devices, the effect and the precision of radiometer imaging can be improved firstly in an internal calibration way and then in an external calibration way. Compared with conventional radiometer calibration methods, the method of the invention has the advantages that the testing efficiency is high, great image effects are provided, the precision is high, etc.

Description

technical field [0001] The invention relates to an internal and external calibration method, in particular to an internal and external calibration method for radiometer imaging. Background technique [0002] At present, the calibration of microwave radiometers mostly adopts the two-point calibration method. If the linearity of the microwave radiometer receiver can be guaranteed, then the two-point calibration method that can be used based on the principle of determining a straight line by two points has the disadvantages of complicated operation and limited accuracy in implementation. This measurement method generally selects a high temperature point and a low temperature point of the same standard body to complete the test process. When switching temperatures, it requires a long transition and stabilization time. In addition, due to the heating or cooling method and material structure problems It is difficult to achieve good temperature uniformity. Since it is an open tes...

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): G01S13/89G01S7/40
CPCG01S7/40G01S13/89
Inventor 吴海涵赵崇辉崔广斌向巍
Owner BEIJING INST OF REMOTE SENSING EQUIP
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