CAJ | 학술논문

本文基于子弹飞行过程中的红外辐射特性和热成像模型，结合大气对红外辐射吸收和散射衰减，在不同距离处将子弹热成像模型视为扩展源目标和点源目标，利用最小可探测温差（ MDTD）、最小可分辨温差（ MRTD）和噪声等效功率（ NEP）分别给出了相应红外视距模型的估算方法。根据红外热像仪常用参数以3种蒙皮温度给出了3种不同模型下子弹辐射作用距离的计算实例及结果：MDTD模型下得到的作用距离最长，MRTD模型计算所得的作用距离约为MDTD模型的2／3，由NEP模型计算所得的作用距离最短，不到MDTD模型视距的1／2。研究表明，实际设计时应根据不同的系统性能选择作用距离模型。
본문기우자탄비행과정중적홍외복사특성화열성상모형，결합대기대홍외복사흡수화산사쇠감，재불동거리처장자탄열성상모형시위확전원목표화점원목표，이용최소가탐측온차（ MDTD）、최소가분변온차（ MRTD）화조성등효공솔（ NEP）분별급출료상응홍외시거모형적고산방법。근거홍외열상의상용삼수이3충몽피온도급출료3충불동모형하자탄복사작용거리적계산실례급결과：MDTD모형하득도적작용거리최장，MRTD모형계산소득적작용거리약위MDTD모형적2／3，유NEP모형계산소득적작용거리최단，불도MDTD모형시거적1／2。연구표명，실제설계시응근거불동적계통성능선택작용거리모형。
On the basis of analysis of the infrared radiation characteristics and the atmospheric absorption and scattering attenuation , bullet′s thermal imaging model can be treated as the extended source target and point target in different distance .The minimum detectable temperature difference ( MDTD ) , minimum resolvable temperature difference(MRTD) and noise equivalent power (NEP) models are used for estimating the corre-sponding bullet radiation detection range .Examples and results of the bullet radiation operating range under three kinds of models are given according to the specific thermal imager′s parameters and three kinds of skin temperature .The operating range is the longest when calculated by MDTD model , and 2/3 of the longest oper-ating range can be obtained with MRTD model .The operating range caculated with NEP model is the shortest , just less than 1/2 of the longest operating range .This study shows that the reasonable operating range model should be chosen based on the system performance in actual design .