机载光电雷达随着使用频次的增加,其探测距离会与出厂时的指标产生严重偏差。为此,分析了机载光电雷达的工作原理,以及光电雷达的最大探测距离受目标辐射强度、大气条件、光学系统等影响;根据光电雷达的探测原理,提出了新型便携式光电雷达测试系统的设计思路,利用黑体和特制平行光管模拟无穷远目标红外辐射强度,将衰减片与步进电机、传动齿轮结合来模拟不同的大气条件,最终确定其样机,并完成了红外衰减片的计量测试;阐明了新型便携式光电雷达测试系统的使用方法及测试结果。该测试系统便于携带,测试效率较高,适用于极端恶劣的环境条件,并可推广至各种类型的红外探测系统的性能测试中。

With the increasing usage frequency of airborne photoelectric radar, its detection distance seriously deviates from the factory indicators. Thus, the working principle of airborne photoelectric radar and the influences of the radiation intensity of the target, atmospheric condition and optical system on the maximum detection distance are analyzed. According to the detection principle of photoelectric radar, the design idea of a new type of portable test system is put forward. The blackbody and parallel light pipes are used to simulate the infrared radiation intensity of targets at infinity and the attenuation feet, stepping motor and transmission gear are combined to simulate different atmospheric conditions. Thus its prototype is ultimately determined and the infrared attenuation measurement test is finished. In addition, the application method and test results of the novel portable photoelectric radar test system are described. As for this test system, it is easy to carry, its test efficiency is high, it is suitable for extremely harsh environmental conditions, and it can be extended to various types of infrared detection system performance tests.