Filtered Data from the Retrospective Analysis of Antarctic Tracking Data Project from the Scientific Committee on Antarctic Research

The Retrospective Analysis of Antarctic Tracking Data (RAATD) is a Scientific Committee for Antarctic Research (SCAR) project led jointly by the Expert Groups on Birds and Marine Mammals and Antarctic Biodiversity Informatics, and endorsed by the Commission for the Conservation of Antarctic Marine Living Resources. The RAATD project team consolidated tracking data for multiple species of Antarctic meso- and top-predators to identify Areas of Ecological Significance. These datasets constitute the compiled tracking data from a large number of research groups that have worked in the Antarctic since the 1990s.This metadata record pertains to the "filtered" version of the data files. These files contain position estimates that have been processed using a state-space model in order to estimate locations at regular time intervals. For technical details of the filtering process, consult the data paper. The filtering code can be found in the https://github.com/SCAR/RAATD repository.This data set comprises one metadata csv file that describes all deployments, along with data files (3 files for each of 17 species). For each species there is:- an RDS file that contains the fitted filter model object and model predictions (this file is RDS format that can be read by the R statistical software package)- a PDF file that shows the quality control results for each individual model- a CSV file containing the interpolated position estimatesFor details of the file contents and formats, consult the data paper.The data are also available in a standardized version (see https://data.aad.gov.au/metadata/records/SCAR_EGBAMM_RAATD_2018_Standardised) that contain position estimates as provided by the original data collectors (generally, raw Argos or GPS locations, or estimated GLS locations) without state-space filtering.

《南极追踪数据回顾性分析数据集（Retrospective Analysis of Antarctic Tracking Data，简称RAATD）》是由南极研究科学委员会（Scientific Committee for Antarctic Research，SCAR）下属的鸟类与海洋哺乳动物专家小组、南极生物多样性信息学小组联合牵头，并经南极海洋生物资源养护委员会认可的科研项目。RAATD项目团队整合了多种南极中层及顶级捕食者的追踪数据，以识别具有生态重要性的区域。该数据集汇集了自20世纪90年代以来在南极开展研究的众多科研团队提交的追踪数据。
本元数据记录对应数据文件的"过滤版"：此类文件包含经状态空间模型处理后的位置估算结果，用于生成固定时间间隔的定位点。如需了解过滤流程的技术细节，请参阅配套数据论文；过滤代码可在https://github.com/SCAR/RAATD代码仓库中获取。
本数据集包含1份描述所有追踪设备部署情况的元数据CSV文件，以及对应17个物种的3类数据文件（每个物种对应3个文件），分别为：
1. 存储适配后的过滤模型对象与模型预测结果的RDS文件（该文件为RDS格式，可通过R统计软件读取）；
2. 展示各独立模型质量控制结果的PDF文件；
3. 包含插值位置估算结果的CSV文件。
如需了解文件内容与格式的详细说明，请参阅配套数据论文。
该数据集同时提供标准化版本（详见https://data.aad.gov.au/metadata/records/SCAR_EGBAMM_RAATD_2018_Standardised），其中包含原始数据采集者提供的原始定位估算结果（通常为未经处理的Argos卫星定位、GPS定位点或估算的GLS地理光感定位点），未经过状态空间过滤处理。