Abstract More and more attention has been paid to the infrared attitude measurement of missile because of its independence and anti-interference ability. In order to solve the problem that the installation error is easy to be introduced in the arrangement of conventional three-axis infrared sensors, the attitude measurement model of the infrared focal plane array is established based on the theory of missile-borne infrared attitude measurement. According to the established attitude measurement model of infrared focal plane array, the attitude calculation method of infrared focal plane array sensor is studied from the point of view of numerical value and low-pixel infrared image respectively. And the infrared focal plane array attitude measurement method based on numerical value and low-pixel image is proposed, which not only uses the way of single-axis infrared focal plane sensor array to avoid the installation error caused by the arrangement of multi-axis sensors, but also doesn’t use the method of integral summation in the calculation process to avoid the error accumulation. Finally, the attitude calculation method is verified by the semi-physical experiment, and the calculation errors of pitch angle and roll angle are respectively within ± 1 . 5 ° and ± 1 ° . The results of this study suggest that the proposed infrared focal plane array attitude measurement method based on numerical value and low-pixel image offers a new and promising approach.

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基于红外焦平面阵列的旋转弹丸姿态测量方法

摘要 导弹的红外姿态测量因其独立性和抗干扰能力越来越受到重视。为解决常规三轴红外传感器布置中容易引入安装误差的问题，基于弹载红外姿态测量理论，建立了红外焦平面阵列姿态测量模型。根据建立的红外焦平面阵列姿态测量模型，分别从数值和低像素红外图像的角度研究红外焦平面阵列传感器的姿态计算方法。并提出了基于数值和低像素图像的红外焦平面阵列姿态测量方法，不仅采用单轴红外焦平面传感器阵列的方式，避免了多轴传感器排列带来的安装误差，而且在计算过程中没有采用积分求和的方法，避免误差累积. 最后通过半物理实验验证了姿态计算方法，俯仰角和滚转角的计算误差分别在±1 以内。5°和±1°。本研究结果表明，所提出的基于数值和低像素图像的红外焦平面阵列姿态测量方法提供了一种新的、有前景的方法。但在计算过程中也不采用积分求和的方法，避免误差累积。最后通过半物理实验验证了姿态计算方法，俯仰角和滚转角的计算误差分别在±1 以内。5°和±1°。本研究结果表明，所提出的基于数值和低像素图像的红外焦平面阵列姿态测量方法提供了一种新的、有前景的方法。但在计算过程中也不采用积分求和的方法，避免误差累积。最后通过半物理实验验证了姿态计算方法，俯仰角和滚转角的计算误差分别在±1 以内。5°和±1°。本研究结果表明，所提出的基于数值和低像素图像的红外焦平面阵列姿态测量方法提供了一种新的、有前景的方法。