Infrared Focal Plane Array Imaging System, Noise Reduction Processing And Power Supply Design

The infrared thermal imaging system plays important function in military and civilian affairs. Depending on faster response speed, higher resolution, and smaller bulk, the infrared focal plane array thermal imaging system holds an important position in infrared fields. Based on the noise processing in system, further research on FPGA program with denoising algorithm and design the power circuit with lower noise and high efficiency.Firstly, the development of infrared imaging system is reviewed briefly, and the characteristics of the system are expatiated. In this way, the important function of the power system and the FPGA algorithm is advanced and discussed elaborately.Next, the FPGA program with denoising algorithm is discussed in this paper, including both the hardware and the software. The FPGA function includes driving program, data matching, correlated multi-sampling and 2D-TDI algorithm. In the end of this part, the questions and the solutions of FPGA design are discussed as a whole.In addition,the basic theory and the signal integrity analysis are interpreted. Based on this theory, the power- filter is analyzed. Then, the theory of system power design is prepared. In the following part of this paper, the power circuit is analyzed, and then the lower noise of the output is measured. According to the results, the decoupling capacitor, PCB design and the filter in the process of lowing noise are expatiated. At last, the blue print of miniaturization is brought forward for the future.Finally, a summary is given about the FPGA program with denoising algorithm and the power circuit with lower noise , and the insufficiency is presented. All of these are the basis of the following research on the infrared focal plane array imaging system.