Health scouting of crops by satellite, airplanes, unmanned aerial (UAV) and ground vehicles can only evaluate the crop from above. The visible leaves may show no disease symptoms, but lower, older leaves not visible from above can do. A mobile in-canopy sensor was developed, carried by a tractor to detect diseases in cereal crops. Photodiodes measure the reflected light in the red and infrared wavelength range at 10 different vertical heights in lateral directions.

中文翻译：

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用于评价谷物垂直病害感染的光电冠层传感器的初步试验

通过卫星、飞机、无人机和地面车辆对作物的健康侦察只能从上面评估作物。可见的叶子可能没有任何疾病症状，但从上面看不到的较低的、较老的叶子可以。开发了一种移动式冠层传感器，由拖拉机携带以检测谷类作物的病害。光电二极管在横向 10 个不同的垂直高度测量红色和红外波长范围内的反射光。