Range-resolved optical detection of honeybees by use of wing-beat modulation of scattered light for locating land mines
Range-resolved optical detection of honeybees by use of wing-beat modulation of scattered light for locating land mines
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DOI：
10.1364/ao.46.003007
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发表时间：
2007-05-20
期刊：
影响因子：
1.9
通讯作者：
Carlsten, John L.
中科院分区：
文献类型：
--
作者：
Hoffman, David S.;Nehrir, Amin R.;Carlsten, John L.
演示了一种成像激光雷达仪器，能够测量高达 3.6 kHz 的反向散射返回信号的频率响应。该仪器采用商用微芯片倍频脉冲Nd:YAG激光器，脉冲重复频率为7.2 kHz，脉冲持续时间小于1 ns，脉冲能量大于10 μJ。采用15.2 cm商用望远镜收集后向散射信号，采用光电倍增管监测散射光。该仪器专为蜜蜂的距离和角度分辨光学检测而设计，用于爆炸物和地雷检测。该仪器能够通过反向散射光的翼拍调制引起的返回信号的频率内容来区分来自蜜蜂和其他来源的散射光。演示了蜂巢附近蜜蜂的检测以及喂食器附近蜜蜂密度的空间映射。 (C) 2007 年美国光学学会。
An imaging lidar instrument with the capability of measuring the frequency response of a backscattered return signal up to 3.6 kHz is demonstrated. The instrument uses a commercial microchip frequency-doubled pulsed Nd:YAG laser with a 7.2 kHz pulse repetition rate, a pulse duration of less than 1 ns, and a pulse energy of greater than 10 mu J. A 15.2 cm commercial telescope is used to collect the backscattered signal, and a photomultiplier tube is used to monitor the scattered light. This instrument is designed for range- and angle-resolved optical detection of honeybees for explosives and land-mine detection. The instrument is capable of distinguishing between the scattered light from honeybees and other sources through the frequency content of the return signal caused by the wing-beat modulation of the backscattered light. Detection of honeybees near a bee hive and spatial mapping of honeybee densities near feeders are demonstrated. (C) 2007 Optical Society of America.