红外凝视传感器定量仿真及模型验证

针对新一代红外凝视成像传感器,依据红外辐射能量传递和转换的物理过程,完成了对传感器各组成单元的物理效应建模.不同于以往成像模型的定性仿真,该模型实现了对系统各模块成像特性的定量描述,综合考虑了传感器的信号传递特性、空间传递特性、空间采样特性和时空噪音特性,构建了较为完善的高仿真度红外成像仿真模型.为验证仿真模型的有效性,搭建了有效性实验验证平台,获取了真实热像仪的性能曲线和输出图像.通过计算和比较仿真模型和真实热像仪性能曲线和输出图像相似程度,定量化评价了模型的仿真度,验证了仿真模型的有效性.

Quantization Simulation and Fidelity Validation of Infrared Staring Imaging Sensors

 Aiming at the new generation of infrared staring imaging sensors,primary physical effects modeling of imaging system elements was accomplished based on thermal infrared radiative transfer and energy conversion in imaging physical processes.The simulation model,which is different from those qualitative models available now,quantitatively represents the modulation characteristics of input information by design parameters of imaging system elements.Through building the signal response model,spatial transfer model,spatial sampling model,and noise characterization model for infrared imaging sensors,a perfect simulator could be established and high-fidelity simulation could be realized for the imaging process.For credibility validation of the simulation model,an experiment platform was constructed to capture the system performance curve and output image of a real infrared camera.Subsequently the similarities of performance curves and output images between the simulator and the real device were calculated and compared,and a quantitive evaluation of the simulation fidelity was made.Finally,the credibility of the simulation model was validated by the fidelity data.