CAJ | 학술논문

针对机载红外搜索跟踪系统（Infrared Search and Track，IRST）理论与实际战场探测能力之间的较大差异，提出了 IRST 系统探测性能评定的方法。对机载红外探测系统探测性能指标进行理论分析，选取探测点源目标的噪声等效辐照度作用距离模型进行分析改进；探讨作用距离与探测概率之间的关系；根据 IRST系统工作方式，推导出系统物理扫描概率和目标发现概率计算公式；分析目标发现概率与系统作用距离以及载机速度之间的关系；搭建双余度反馈 IRST 系统探测概率测试平台，制定实验评测步骤，提出一种对探测系统性能进行评估的方法，该方法简单可靠。仿真实验结果表明，满足一定的探测概率下，系统作用距离极限可达到60km；通过半实物仿真平台的测试，实验结果较好地验证了所建模型的合理性。
침대궤재홍외수색근종계통（Infrared Search and Track，IRST）이론여실제전장탐측능력지간적교대차이，제출료 IRST 계통탐측성능평정적방법。대궤재홍외탐측계통탐측성능지표진행이론분석，선취탐측점원목표적조성등효복조도작용거리모형진행분석개진；탐토작용거리여탐측개솔지간적관계；근거 IRST계통공작방식，추도출계통물리소묘개솔화목표발현개솔계산공식；분석목표발현개솔여계통작용거리이급재궤속도지간적관계；탑건쌍여도반궤 IRST 계통탐측개솔측시평태，제정실험평측보취，제출일충대탐측계통성능진행평고적방법，해방법간단가고。방진실험결과표명，만족일정적탐측개솔하，계통작용거리겁한가체도60km；통과반실물방진평태적측시，실험결과교호지험증료소건모형적합이성。
Due to the difference between theory detection and in-battlefield detection ability of airborne IRST (Infrared Search and Track) system,the method of evaluation for detection system was put forward.Firstly,the theory aiming at operational capability of airborne infrared detection system was analyzed,especially the betterment of NEFD (Noise Equivalent Flux Density)operating range model,and the analysis of functional relationship between operating range and detection probability.According to the operation mode of IRST system,the computational formula of physical detection probability and target identification probability was deduced,and the target identification probability changing with operating range as well as speed was analyzed.Finally,the test platform of IRST system detection probability was set up and the experimental evaluation steps were made,and a simple and reliable method of evaluation and calibration was proposed.Simulation result shows that the operation range limitation of IRST system can reach 60km.Testing by semi-physical simulation,the rationality of the model is verified through the experimental conclusion.