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为了实现我国无人机全天候自主着舰,本文提出了基于合作目标的视觉着舰方案。首先,根据大气窗口、红外辐射在大气中的传输特性和待选波段对应的最佳辐射温度对合作目标温度控制的影响,确定了8～12μm波段为合作目标对应的辐射波段。然后,根据舰船上其他热源的形状特点,确定了合作目标的形状为“T”形。最后,根据Johnson准则,确定了合作目标的大小,设计制作了一个具有特殊形状主动发射特定波段红外辐射的合作目标。实验结果表明:应用仿射不变矩对本文中设计的合作目标的平均识别时间为:17.2ms。能够明显提高无人机自主着舰的可靠性和实时性。
In order to realize autonomous landing of our UAVs around the clock, this paper presents a visual landing plan based on the cooperation goals. First of all, according to the influence of the atmospheric window, the transmission characteristics of infrared radiation in the atmosphere and the optimal radiation temperature corresponding to the selected band on the temperature control of the cooperative target, the radiation band corresponding to the cooperation target of 8-12 μm is determined. Then, according to the shape characteristics of other heat sources on the ship, the shape of the cooperation target is determined as “T” shape. Finally, according to the Johnson guideline, the size of the cooperation target is determined and a cooperation target of special shape active emission of infrared radiation in a specific wavelength band is designed. The experimental results show that the average identification time of affine moment invariant to the cooperation goal designed in this paper is 17.2 ms. Can significantly improve the reliability and real-time autonomy of UAVs.