An assessment of light-based geoposition estimates from archival tags
An assessment of light-based geoposition estimates from archival tags
复制标题
基于档案标签的基于光的地理位置估计的评估
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
J. Eveson
中科院分区：
文献类型：
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作者：
D. Welch;J. Eveson
档案标签记录很长一段时间(几个月到几年)内被标记动物的环境信息。理论上，位置可以从光强度随时间变化的记录中估计出来。我们描述了两种基于估计光强最大变化率的时间或达到参考光强的时间来估计地理位置的方法。数字信号处理是作为提高光记录的信噪比的一种方法而研究的。我们的测试数据表明，被标记的动物的每日位置可能在大约140公里的平均误差(经度0.9°和纬度1.2°的SD)内估计，接近最好的涡流物理海洋模型的分辨率。地理定位中剩余的大尺度误差的来源似乎与标签无关，可能与大尺度天气系统有关。目前的档案标签的准确性足以让驴..。
Archival tags record information about the environment of tagged animals over long periods of time (months to years). In theory, position can be estimated from a record of changes in light intensity with time. We describe two approaches to estimating geoposition based on estimating either the time of maximal rate of change in light intensity or the time that a reference light intensity is reached. Digital signal processing is investigated as a method of increasing the signal-to-noise ratio of the light record. Our test data suggest that the daily position of a tagged animal can potentially be estimated within an average error of about 140 km (SD's of 0.9° of longitude and 1.2° of latitude), approaching the resolution of the best eddy-resolving physical oceanographic models of ocean currents. The source of the remaining large-scale errors in geoposition appears to be extrinsic to the tags and may be related to large-scale weather systems. The accuracy of current archival tags is sufficient to permit an ass...