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为了分析红外图像末制导导弹的落点精度,需要对红外成像导引头的输出误差进行估算。分析了红外凝视成像导引头伺服稳像平台的控制回路,并以该回路为依据,充分考虑系统中误差产生的外因和内因,讨论了存在于导引头输出量中的弹体扰动误差和成像误差,以及部件漂移误差和测速坐标系误差,推导了各误差项的表达形式,最后基于以上分析,就如何有效控制导引头误差,提高其精度,提出了有针对性的方法和关键点。
In order to analyze the placement accuracy of infrared guided image guided missile, the output error of infrared imaged seeker needs to be estimated. The control loop of servo imaging platform of infrared gaze imaging seeker is analyzed. Based on the loop, the external and internal factors of error in the system are fully considered. The missile disturbance errors existing in the output of seeker are discussed. Imaging error, component drift error and velocity error of coordinate system, the expression of each error term is deduced. Finally, based on the above analysis, this paper presents some methods and key points on how to effectively control seeker error and improve its accuracy .