CAJ | 학술논문

作用距离是红外告警系统的重要参数指标，其大小由告警系统、目标和背景等的特点决定。对晴空背景下红外告警系统的作用距离进行了研究，充分考虑了大气传输和大气辐射的特点，建立了作用距离的理论计算模型，结合计算模型和典型数据，针对面目标和点目标两种情况，计算了不同目标高度和不同目标高度角时大气对作用距离的影响。结果表明：在目标飞行高度一定时，只有当目标高度角大于一定角度时目标才可能被探测，该角度随目标的飞行高度增大而减小。
작용거리시홍외고경계통적중요삼수지표，기대소유고경계통、목표화배경등적특점결정。대청공배경하홍외고경계통적작용거리진행료연구，충분고필료대기전수화대기복사적특점，건립료작용거리적이론계산모형，결합계산모형화전형수거，침대면목표화점목표량충정황，계산료불동목표고도화불동목표고도각시대기대작용거리적영향。결과표명：재목표비행고도일정시，지유당목표고도각대우일정각도시목표재가능피탐측，해각도수목표적비행고도증대이감소。
The operating range is an important parameter of the IR alarm system, and its value is decided by the characteristics of the alarm system, the target and the background. A research was done specially on the operating range of ground-based IR alarm system in clear sky. The traits of the transmission and radiation of the atmosphere were fully considered, and then the theoretic calculating model of the operating range was established. Combining the model and typical data, and considering the two situation of cover target and spot target, the effects of the atmosphere on the operating range were calculated for different target altitude and high angle. The results show that the target can be detected only when the target's high angle is larger than a certain value if the altitude of the target is fixed, and this angle decreases as the target attitude increases.