State-space model for light-based tracking of marine animals
State-space model for light-based tracking of marine animals
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DOI：
10.1139/f07-064
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发表时间：
2007-08-01
影响因子：
2.4
通讯作者：
Sibert, John R.
中科院分区：
文献类型：
--
作者：
Nielsen, Anders;Sibert, John R.
提出了一种直接从一系列光测量中估计地理位置的最可能轨迹的相干模型。该模型每天估计两个地理位置，而不将每日光数据减少到两个阈值交叉时间，其协方差结构被设计为处理由于例如当地天气条件引起的高相关性，并且其通过传播数据来估计纬度精度的年度模式。地理定位过程中的不确定性。该模型已应用于一项系泊研究、一项GPS漂流浮标研究以及众多模拟案例。模拟进行了现实的假设，太阳高度和光之间的关系和现实的不确定性参数（所有取自真实的数据）。仿真结果表明，所有的模型参数是可识别的，所有的轨迹可以重建在1度或2度的纬度和0.5度或1度的经度。系泊浮标和漂流浮标的数据表明，即使在其他方法完全失败的情况下，也可以可靠地估计航迹。
A coherent model is presented to estimate the most probable track of geographic positions directly from a series of light measurements. The model estimates two geographic positions per day, without reducing the daily light data to two threshold crossing times, its covariance structure is designed to handle high correlations due to for instance local weather conditions, and it call estimate the yearly pattern in latitudinal precision by propagating the data. uncertainties through the geolocation process. The model is applied to one mooring study, one GPS drifter buoy study, and numerous simulated cases. The simulations are performed with realistic assumptions about the relationship between solar altitude and light and with realistic uncertainty parameters (all taken from real data). The simulations showed that all model parameters were identifiable, and that all tracks could be reconstructed within 1 degrees or 2 degrees latitude and 0.5 degrees or 1 degrees longitude. The mooring and drifter buoy data showed that the tracks could be reliably estimated, even in cases where the other methods had completely failed.