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首页> 外文期刊>Wildlife Society Bulletin >Wildlife Monitoring With Unmanned Aerial Vehicles: Quantifying Distance to Auditory Detection
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Wildlife Monitoring With Unmanned Aerial Vehicles: Quantifying Distance to Auditory Detection

机译：用无人机进行野生动物监测：量化到听觉检测的距离

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There is growing application of small unmanned aerial vehicles (UAVs) for detecting, enumerating, and monitoring wildlife. However, little is known about how the sound from UAVs may be affecting wildlife being studied. We quantified sound levels of 2UAVs to determine minimum altitudes they can fly before being aurally detected by wildlife. We tested a small quadcopter (SkyRanger; Aeryon Labs, Inc., Waterloo, ON, Canada) and a fixed-wing platform (eBee; Sensefly Ltd., Cheseaux-sur-Lausanne, Vaud, Switzerland) at the University of Calgary in Calgary, Alberta, Canada, between 1000 and 1200 hours on 27 September 2014. We modeled sound propagation and attenuation in relation to the lower hearing thresholds for 3 game species and 2 species of predators.Results indicate that the UAV sound levels differed in the lower frequency ranges, but were otherwise similar above 1.25 kHz. The domestic cat (Felis silvestris catus) has the lowest hearing threshold, with the capacity to hear both UAVs from the furthest distance; whereas, the mallard (Anas platyrhynchos) has the greatest hearing threshold, which means UAVs can be closer before being aurally detected. Because flying height is related to image resolution, our results indicate that the ability to detectsome wildlife species may be affected by the need to fly higher to minimize sound disturbance, potentially requiring higher resolution cameras than those currently used. Also, additional flight permitting may be required if modeling indicates a UAV mustfly at a greater height to avoid a behavioral response by the target species.
机译：小型无人飞行器（UAV）在检测，枚举和监视野生生物方面的应用正在不断增长。然而，人们对无人机声音如何影响正在研究的野生生物知之甚少。我们对2UAV的声级进行了量化，以确定它们在被野生动物听觉之前可以飞行的最低高度。我们在卡尔加里的卡尔加里大学测试了小型四轴飞行器（SkyRanger;加拿大安大略省滑铁卢的Aeryon Labs，Inc.）和固定翼平台（eBee;瑞士洛桑Cheseaux-sur-Lausanne的Sensefly Ltd.）。 （加拿大艾伯塔省，2014年9月27日）之间的时间为1000到1200小时。我们对三种游戏物种和2种捕食者的较低听觉阈值的声音传播和衰减进行了建模。范围，但在1.25 kHz以上相似。家猫（Felis silvestris catus）的听力阈值最低，能够从最远的距离听到这两种无人机。绿头鸭（Anas platyrhynchos）的听力阈值最大，这意味着无人机可以在被听觉发现之前靠近。因为飞行高度与图像分辨率有关，所以我们的研究结果表明，检测某些野生动植物物种的能力可能会受到需要飞得更高以最小化声音干扰的影响，这可能需要比当前使用的相机更高的分辨率。同样，如果建模表明无人机必须在更高的高度飞行以避免目标物种的行为响应，则可能需要额外的飞行许可。

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