Non-signal Acquisition And Preprocessing Of Uncooled Infrared Focal Plane

Infrared technique is used widely in both military field and civilian field as means of finding, detecting and identifying the targets. The development of infrared focal plane arrays technique promotes the performance of infrared system. Great achievements were achieved in the manufacturing of uncooled microbolometer infrared focal plane arrays. By this technique, infrared system can be made in the formation of small volume, light weight, low price and being portable. It promotes the utilization of infrared system greatly in all fields. So the techniques of uncooled microbolometer infrared imaging become one of the main points from now on.The title of this paper is THE SIGNAL COLLECTION AND PRETREATMENT OF UFPA. It details the application, status, development and nonuniformity correction method of UFPA. The development of drive circuit and TEC circuit is introduced in detail. The EPM7128AETC is used as hardware design platform and VHDL is employed to describe the driving sequencer so that the drive circuit is miniaturized. Analog signals are sampled by AD9240 that is a high speed and parallel A/D sampling chip. FIFO is used as a cache in order to design the module of signal collection of UFPA. Two-point real-time correction and histogram statistics of the images are completed with Field-Programmable Gate Arrays (FPGA). In addition, the system design and debug experiences are summarized and analyzed in detail.