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首页> 外文期刊>Environmental Biology of Fishes >Factors affecting detection probability and range of transmitters and receivers designed for the Juvenile Salmon Acoustic Telemetry System
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Factors affecting detection probability and range of transmitters and receivers designed for the Juvenile Salmon Acoustic Telemetry System

机译：影响用于少年鲑鱼声遥测系统设计的检测概率和变送器和接收器范围的因素

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摘要

Acoustic telemetry allows collection of data on the movement and survival of fish and other aquatic organisms. The passive form of this technology uses transmitters (tags) and fixed receivers to record when an organism is present at a given location. Understanding and interpretation of these data depends on knowledge of the detection range and detection probability of the receivers. This study examines factors affecting performance of tags and receivers designed for the Juvenile Salmon Acoustic Telemetry System (JSATS) at a location in the Sacramento River in CA, USA. A group of tags (n = 13) of two power output levels, each transmitting a unique code at five second intervals, were manually moved past a set of two fixed receivers in upstream and downstream directions along transects of different distances from the receivers at two different speeds. The factors that significantly affected detection probability were tag orientation and tag movement direction. Tag orientation had the largest effect on detection probability, with higher detection rates when the tag's piezoelectric transducer was directed towards the receiver. Detection probability (proportion of transmissions detected) was 30-50% out to 160 m. Detection efficiency (proportion of tags regarded as present) was 99-100% when tags passed within 25 m and 84-96% within 135 m of a receiver. These results have implications for the design and interpretation of acoustic tracking studies and the orientation of transmitters when implanted into fish.
机译：声遥测允许收集鱼类和其他水生生物的运动和生存数据。当在给定位置存在有机体时，该技术的被动形式使用发射器（标签）和固定接收器来记录。对这些数据的理解和解释取决于检测范围和接收器的检测概率的知识。本研究审查了影响为少年鲑鱼声遥测系统（JSATS）的标签和接收器表现的因素在美国，美国萨克拉门托河的一个地点。两个功率输出电平的一组标签（n = 13），每个标签（n = 13），每个标签（n = 13）每次发送唯一的代码，在两个沿两个固定接收器的两个固定接收器中手动地移动到两个上游和下游方向，沿两个从接收器的不同距离的横向转换不同的速度。显着影响检测概率的因素是标签方向和标签移动方向。标签方向对检测概率的效果最大，当标签的压电传感器指向接收器时，检测率较高。检测概率（检测到的变速器的比例）为30-50％至160μm。当标签在25米内通过135米内的标签在135米内通过时，检测效率（视为目前的标签的比例）为99-100％。这些结果对声学跟踪研究的设计和解释以及植入鱼时的发射机取向的影响。

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