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目前许多国家都在加速红外搜索、跟踪系统的研制。如何正确地测试红外跟踪系统的各种技术参数,是设计者必须考虑的问题。本文着重介绍以圆锥扫描方式工作的红外跟踪器的静态参数测试。圆锥扫描红外跟踪器的静态参数主要有:跟踪器的扫描视场、跟踪器的线性区、跟踪器的静态盲区、跟踪器的等效噪声通量密度、放大器自动增益动态范围、比相器输出直流误差信号电压等。这些参数的测试一般在组装系统之前,在实验室里对各部件进行测试。扫描视场的测试是跟踪器的主要测试指标,测试应分几个步骤进行。 1.仪器配置:测试使用平行光管作光源,使平行光管与跟踪器光轴成一定的夹角(一般夹角以90°为好),在它们轴线的交点处放一块平面反射镜,在平面反射镜的垂直方向放
At present, many countries are accelerating the development of infrared search and tracking systems. How to properly test the various technical parameters of the infrared tracking system is a question that the designer must consider. This article focuses on the static parameters of the infrared tracker working in the cone scan mode. The main parameters of the cone scanning IR tracker are: the scanning field of the tracker, the linear area of the tracker, the static dead zone of the tracker, the equivalent noise flux density of the tracker, the dynamic range of the amplifier’s automatic gain, the output of the phase comparator DC error signal voltage and so on. Testing of these parameters is generally carried out in the laboratory before the assembly of the system components. Scanning field of view of the tracker is the main test indicators, the test should be divided into several steps. 1. Instrument Configuration: The test uses a parallel light pipe as a light source to make the angle between the parallel light pipe and the optical axis of the tracker at a certain angle (generally 90 ° is good), place a plane mirror at the intersection point of the axes, Put in the vertical direction of the plane mirror