Infared nonuniformity correction method for removing temperature shift
A non-uniformity correction and temperature drift technology, applied in radiation pyrometry, measuring devices, instruments, etc., can solve problems such as gain correction, and achieve the effect of improving uniformity, eliminating residual non-uniformity, and simple principle
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[0066] The present invention will be further described below in conjunction with accompanying drawing:
[0067] Detailed technical scheme of the present invention is:
[0068] An infrared non-uniformity correction method that removes temperature drift. The two-point algorithm compensates both the offset and the gain. Sometimes the focal plane array will cause temperature drift after a period of operation. At this time, a little correction can correct the offset. Set the coefficient to compensate.
[0069] The correction of the non-uniformity of the infrared focal plane can be realized by a separate FPGA, and the separate FPGA correction circuit has the advantages of being simple and easy to control. The hardware part of its correction system mainly consists of five parts: detector, FPGA, analog-to-digital conversion, external memory, and terminal display.
[0070] Since the non-uniformity correction mainly needs adding (subtracting) and multipliers, and the selected FPGA con...
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