Determining forward speed from accelerometer jiggle in aquatic environments
Determining forward speed from accelerometer jiggle in aquatic environments
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DOI：
10.1242/jeb.170449
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发表时间：
2018-01-01
影响因子：
2.8
通讯作者：
Goldbogen, Jeremy A.
中科院分区：
文献类型：
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作者：
Cade, David E.;Barr, Kelly R.;Goldbogen, Jeremy A.
动物的移动速度对于了解它们的能量需求、运动能力和觅食性能至关重要，但目前通过动物附着设备测量速度的方法并不普遍适用。在这里，我们提出并评估了一种新的方法，该方法将前进速度与生物设备的随机运动联系起来，作为标签摆动，标签振动的振幅由高采样率加速度计测量，随着速度的增加呈指数增长。我们使用两种类型的生物记录装置在一个流动池中成功地测试了这种方法，并在野生鲸类身上使用了两种类型的吸盘附着标签和两种类型的飞镖附着标签，这些鲸类的长度约为3至20米。这种技术在确定速度方面比其他方法有一些优势，因为它与设备方向无关，只依赖于压力传感器和高采样率加速度计，这些传感器在生物设备类型中几乎是通用的。
How fast animals move is critical to understanding their energetic requirements, locomotor capacity and foraging performance, yet current methods for measuring speed via animal-attached devices are not universally applicable. Here, we present and evaluate a new method that relates forward speed to the stochastic motion of biologging devices as tag jiggle, the amplitude of the tag vibrations as measured by high sample rate accelerometers, increases exponentially with increasing speed. We successfully tested this method in a flow tank using two types of biologging devices and in situ on wild cetaceans spanning similar to 3 to >20 m in length using two types of suction cup-attached tag and two types of dart-attached tag. This technique provides some advantages over other approaches for determining speed as it is device-orientation independent and relies only on a pressure sensor and a high sample rate accelerometer, sensors that are nearly universal across biologging device types.