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Altitude measurement using three circular marks

机译:使用三个圆形标记的高度测量

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This paper describes a system for a new altitude measurement method, using three circular marks on the landing location for a Vertical Take-Off/Landing (VTOL) aircraft without an altimeter. This system costs less than a radar altimeter, yet it is more accurate than a pressure altimeter at low altitude and simpler than the Carrier Phase Differential Global Positioning System (CDGPS). The proposed method requires only an onboard camera, three circular marks placed on the landing site, and a control computer. The onboard camera must be facing toward the front of the aircraft and configured to detect the shape of the circular mark in image data form. The flight control computer calculates the altitude based on the known distance between the circular marks and the landing point. The accuracy of the proposed method is described in the analysis results section.
机译:本文介绍了一种用于新的高度测量方法的系统,该系统在没有高度计的垂直起降飞机(VTOL)的着陆位置上使用了三个圆形标记。该系统的成本低于雷达高度计,但比低高度的压力高度计更精确,并且比载波相位差分全球定位系统(CDGPS)更简单。所提出的方法仅需要一个车载摄像机,在着陆点上放置三个圆形标记以及一台控制计算机。机载摄像头必须面向飞机的前方,并且必须配置为以图像数据形式检测圆形标记的形状。飞行控制计算机根据圆形标记和着陆点之间的已知距离来计算高度。分析结果部分介绍了该方法的准确性。

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