Abstract
With the requirement of the SWIR Hyper-spectral Imaging Spectrometer, this article describes a project of SWIR image
circuit based on IRFPA detector. First, the structure of the SWIR Hyper-spectral Imaging Spectrometer is introduced in
this paper, and then the infrared imaging circuit design is proposed, which is based on MCT SWIR FPA with 500*256
pixels, the detector NEPTURN, in Safradir Company. According to the scheme, several key technologies have been
studied in particular, such as driving circuit, time control circuit, high-speed A/D converter, LVDS (Low Voltage
Differential Signaling) transmission circuit. At last, An improved two-point Correction Method was chosen to correct the
Non-uniformity of image. The simulation results demonstrate that the proposed method can effectively suppress noises
and work with low power consumption. The electric system not only has the advantages of simplicity and compactness
but also can work stably, providing 500×256 image at the frame frequency of 200 Hz in good quality.
