【作者】 刘兆军； 周峰； 罗渠； 王怀义；

【Author】 Liu Zhaojun Zhou Feng Luo Qu Wang Huaiyi (Beijing Institute of Space Mechanics & Electricity. Beijing 100076)

【机构】 北京空间机电研究所；

【摘要】 空间红外相机的探测能力主要与相机自身收集目标信号的能力、目标所处的探测背景、相机本身的背景噪声以及探测器组件的噪声水平有关。通常情况下,衡量空间红外相机探测能力的主要技术指标是NEFD、 NEQD和SNR。文章在深刻理解NEFD、NEQD和SNR定义的基础上,通过原理研究和理论推导,最终形成了一套空间红外相机探测能力理论计算公式,并用实例对其进行了仿真计算。通过和国外同类型空间红外相机的论证结果相比较表明,该方法正确可靠。更多还原

【Abstract】 The detect ability of space infrared camera is related to the ability of collecting target signal, detection background of the target, background noise of the camera itself and the le\el of detector assembly. In general, the primary specifications for expressing detect ability are NEFD, NEQD and SNR. On basis of understanding the definition of NEFD, NEQD and SNR. a set of theory calculation formulae of detect ability are derived in the paper. Finally, simulation is conducted through an example according to the theory calculation formulae. Compared with the same type of foreign space infrared camera, this method is proved to be correct.更多还原