Field calibration method of infrared warning equipment
The infrared radiation calibration method was introduced,the field calibration of infrared warning equipment was carried out by short-range direct extended source method and long-distance small source method,and the verification and error analysis were carried out.The results show that the relative calibration errors of the short-range direct extended source method is between 5.67%to 15.73%at the temperature range of 10 ℃~50 ℃.The relative calibration errors of the long-distance small source method at 37 m ranging from 1.38%to 5.72%,and those at 63 m ranging from 10.34%to 29.66%,indicating that the long-distance small source method at an appropriate distance is an effective method for field calibration of infrared warning equipment operating in the mode of circular scanning.