Standard radiation source for external field target characteristic calibration
A target characteristic and radiation source technology, which is applied in the field of infrared characteristic measurement equipment calibration, can solve the problems of inability to work in the external field and low radiation accuracy, and achieve the effect of improving emissivity, ensuring uniform temperature effect, and uniform heating
Pending Publication Date: 2022-04-26
中国兵器工业试验测试研究院 +1
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Problems solved by technology
[0005] The present invention provides a standard radiation source used for calibration of target characteristics in the external field to solve the problems in the prior art that the standard radiation source has low radiation accuracy caused by thermal expansion stress and cannot work in the external field
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[0030] specific implementation plan
[0031] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0032] refer to figure 1 , the present embodiment provides a standard radiation source for external field target characteristic calibration, including: a graphite cavity 101, a support end and a temperature control device 102;
[0033] One end of the graphite cavity 101 is a radiation outlet 1011, and a cavity bottom 1012 is arranged in the graphite cavity 101;
[0034] The supporting end includes a fixed end 103 and a sliding end 104. The fixed end 103 is arranged outside the graphite chamber 101 at an end away from the radiation outlet 1011, and the sliding end 104 is arranged outside the graphite chamber near the end of the radiation outlet 1011 and can be positioned along the axial direction of the graph...
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The invention discloses a standard radiation source for external field target characteristic calibration. The standard radiation source comprises a graphite cavity, a supporting end and a temperature control device, a radiation outlet is formed in one end of the graphite cavity, and a cavity bottom is arranged in the graphite cavity; the supporting end comprises a fixed end and a sliding end, the fixed end is arranged at the end, away from the radiation outlet, outside the graphite cavity, and the sliding end is arranged at the end, close to the radiation outlet, outside the graphite cavity and can slide in the axial direction of the graphite cavity; the temperature control device is matched with the graphite cavity; the arrangement of the sliding end can eliminate thermal expansion stress when the graphite cavity expands at a high temperature, ensure stable performance of the graphite cavity, improve emissivity, and ensure emission accuracy and stability during external field work.
Description
technical field [0001] The invention relates to the technical field of calibration of infrared characteristic measuring equipment, in particular to a standard radiation source used for calibration of target characteristics in an external field. Background technique [0002] At present, with the development of technology, the application of infrared imagers has been extended to near space and outer space. These systems include space infrared observation system, near space detection system, and spaceborne infrared remote sensing system. With the technical and tactical performance of these infrared load With the gradual increase in requirements, high-precision quantitative detection has become an inevitable trend for the further development of infrared loads. [0003] High-precision infrared optical equipment is widely used in my country. In order to support the application of infrared technology, it is necessary to carry out target characteristic measurement, and a large numbe...
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Inventor 曹静张玉国刘保炜邱超陈俊彪孙广尉胡云飞李世伟
Owner 中国兵器工业试验测试研究院