Validation of of fish length estimations from a high frequency multi-beam sonar (ARTS) and its utilisation as a field-based measurement technique
Validation of of fish length estimations from a high frequency multi-beam sonar (ARTS) and its utilisation as a field-based measurement technique
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DOI：
10.1016/j.fishres.2019.05.004
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发表时间：
2019-10-01
影响因子：
2.4
通讯作者：
Jerrett, Alistair
中科院分区：
文献类型：
--
作者：
Cook, Denham;Middlemiss, Karen;Jerrett, Alistair
高频多波束声纳能够在水下摄像机等传统方法不适用的情况下，在高度浑浊和光线不足的条件下确定鱼类的大小特征和行为。我们试图验证这种技术，通常被称为成像声纳，通过确定其准确性和精度在测量典型的沿海和河口环境的小型鱼类。通过三种方式进行验证：（1）使用两种活鱼和合成目标，对自适应分辨率成像声纳（阿里斯）和立体相机测量进行基于水箱的比较验证;（2）评估成像声纳在测量具有一系列游泳模式（包括唇状、亚鳃状和鳃状）的四种不同鱼类时的效用;（3）基于场的声纳采样与传统诱饵诱捕方法的比较。我们的研究结果表明，目标的角度提出的声纳波束造成的测量误差，在坦克为基础的确定。当这被考虑到测量协议有没有显着的相互作用的影响，游泳模式的测量精度，与声纳结果之间的0.3和9.6%，在所有四个物种的调查。与立体照相技术相比，声纳测量的准确性和精确度较低。基于现场的采样结果之间的成像声纳和诱饵陷阱采样方法大致相当。成像声纳的适用性进行了讨论的背景下，在鱼类采样调查，特别是昼夜采样制度，并在浑浊的环境中使用。结果验证了成像声纳在渔业研究的不同领域中的用途。
High frequency multi-beam sonars enable the determination of fish size characteristics and behaviour in highly turbid and low-light conditions when more traditional methods, such as underwater cameras, are unsuitable. We sought to validate this technology, commonly referred to as imaging sonar, by determining its accuracy and precision during the measurement of small-bodied fish typical of coastal and estuarine environments. Validation was conducted in three ways: (1) a comparative tank-based validation of an Adaptive Resolution Imaging Sonar (ARIS) and stereo-camera measurements using two species of live fish, and synthetic targets; (2) assessment of the imaging sonar's utility when measuring four different fishes possessing a range of swimming modalities, including labriform, sub-carangiform, and carangiform; and (3) comparison of field-based sonar sampling with conventional baited trap methodology. Our results showed that the angle at which targets are presented to the sonar beams caused measurement error during tank-based determinations. When this was factored into measurement protocols there was no significant interactive effect of swimming mode on measurement accuracy, with the sonar results between 0.3 and 9.6% in all four species investigated. Sonar derived measurements were less accurate and precise when compared to stereo-camera techniques. Field-based sampling outcomes were broadly comparable between the imaging sonar and baited trap sampling methodology. The suitability of the imaging sonar is discussed in the context of use in fish sampling surveys, particularly diurnal and nocturnal sampling regimes, and in turbid environments. Results validate the usefulness of imaging sonars for use in diverse fields of fisheries research.