Infrared weak light radiation calibration device and calibration method for photoelectric reconnaissance equipment

The invention discloses an infrared weak light radiation calibration device and calibration method for photoelectric reconnaissance equipment, and belongs to the technical field of photoelectricity. The calibration device comprises an infrared light source system, an infrared light beam transmission channel, a detected photoelectric reconnaissance device, a vacuum interface, a vacuum cover, a first off-axis parabolic mirror, a field diaphragm, a second off-axis parabolic mirror, an optical filter, a third off-axis parabolic mirror, an impurity band blocking detector, a pulse tube refrigerator and a vacuum pump unit. The impurity band blocking detector has the advantages of being high in sensitivity, large in scale array, wide in detection spectrum band and high in response speed. The optical radiation power can be measured and calibrated in a leather tile magnitude, and the optical radiation power sensor is widely applied to the fields of space imaging and the like due to unique performance; the impurity band