红外正交四元探测器的时域建模与仿真

Modeling and Simulation of Infrared Cross-detector by Time Domain

时域建模与仿真是系统分析的重要方法。通过对红外正交四元探测器原理与结构的分析,用数学方法详细描述了弥散圆在通过各个探测元的过程中产生的功率,推导出了正交四元探测器所产生的脉冲位置、波形与时间的函数关系,建立了正交四元探测器的时域数学模型,并运用该模型对目标波形和脉位进行了仿真。结果证明了模型的实用性,为该探测器的信号处理、目标识别和系统仿真奠定了基础。

Modeling and simulation by time domain is an important method for system analysis. By analyzing the structure and principle of the infrared cross-detector, the power produced by each of detector units while the dispersive spot overpass them was described in detail by mathematical method. The functional relationships between pulse phase, pulse waveform and time were deduced. The detector＇s mathematical model by time domain was set up, and then a target＇s waveform and pulse position were simulated. The practicality of the model was verified by analyzing some examples. It is the basement for signal processing and target recognition and system simulating with it.