Better understanding of fishes’ migration behaviors is vital for recovery of many endangered species including salmon, so higher accuracy and efficiency are constantly pursued in three-dimensional localization by adopting robust tracking algorithms. The Juvenile Salmon Acoustic Telemetry System (JSATS) cable system was developed and employed as a reference sensor network for detecting and tracking juvenile salmon along the Snake River and the lower Columbia River. A 3D positioning solver is applied to track positions of fish surgically implanted with JSATS acoustic transmitters. An approximate maximum likelihood solver was developed that considers the influence of measurements from all detected hydrophones. Additionally, filters were introduced to reduce the influence of bad measurements. Validation tests demonstrated significantly improved performance of the new solver versus previously used solvers.
Revised: February 13, 2020 |
Published: November 27, 2014
Citation
Li X., Z. Deng, Y. Sun, J.J. Martinez, T. Fu, G.A. McMichael, and T.J. Carlson. 2014.A 3D approximate maximum likelihood solver for localization of fish implanted with acoustic transmitters.Scientific Reports 4. PNWD-SA-10355. doi:10.1038/srep07215