Automatic testing device of direct detection type radiometer

A radiometer and wave detection technology, which is applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of long test time, difficult radiation source control, and high test environment requirements.

Active Publication Date: 2015-03-25
BEIJING INST OF REMOTE SENSING EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a direct detection radiometer test equipment to solve the problems of difficult control of radiation source, high test environment requirements and long test time in the existing system

Method used

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  • Automatic testing device of direct detection type radiometer
  • Automatic testing device of direct detection type radiometer
  • Automatic testing device of direct detection type radiometer

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Embodiment Construction

[0036] A direct detection type radiometer automatic test equipment, including: a program-controlled DC power supply 4 and a temperature sensor 7, and also includes: a display and control device 1, a microwave signal source 3, a noise source 2, a numerically controlled attenuator 6 and a three-decibel bridge 5. The display and control device 1 includes: a human-computer interaction module 1-1, a control module 1-2, an attenuation control card 1-4 and a data acquisition card 1-3. The function of the human-computer interaction module 1-1 is to provide a human-computer interaction interface, which is convenient for operators to use. The function of the control module 1-2 is to complete the communication with the human-computer interaction module 1-1, the data acquisition card 1-3, the attenuation control card 1-4, the microwave signal source 3, and the program-controlled DC power supply 4, so as to realize the coordination of each component .

[0037] The human-computer interacti...

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Abstract

The invention discloses an automatic testing device of a direct detection type radiometer. The automatic testing device comprises a program control direct current power source (4) and a temperature sensor (7). A display control device (1) comprises a human-machine interaction module (1-1), a control module (1-2), an attenuation control card (1-4) and a data collecting card (1-3). A noise source (2) outputs noise and is output after passing through a numerical control attenuator (6) and a three-decibel electrical bridge (5). The display control device (1) outputs different noise temperatures serving as the temperature sensitivity measuring basis by controlling the attenuation values of the numerical control attenuator (6). A microwave signal source (3) outputs signals with different frequencies and powers. The data collecting card (1-3) finishes collecting of data output by the radiometer. Temperature sensitivity, bandwidth and integral time testing processes and data processing are finished through the display control device (1). A method has the advantages that a noise source is controlled easily, the requirement for the test environment is low, the testing speed is high, and the device is simple.

Description

technical field [0001] The invention relates to a radiation meter testing device, in particular to a direct detection radiometer automatic testing device. Background technique [0002] At present, the overall measurement method is mostly used for the measurement of the microwave radiometer, and the test method is generally used without special test equipment. When this method is used to measure microwave radiometers, a large-area radiation source whose temperature can be changed and whose emissivity is close to 1, a closed microwave anechoic chamber, display and control equipment, DC power supply, temperature sensor and other supporting equipment are required. This measurement method generally selects a high temperature point and a low temperature point to complete the overall measurement. Point the radiometer to the noise radiation source during the test, and change the radiation amount of the radiation source by changing the temperature of the radiation source to obtain t...

Claims

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Application Information

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IPC IPC(8): G01R35/00
Inventor 赵崇辉崔广斌
Owner BEIJING INST OF REMOTE SENSING EQUIP
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