通过到达时间差异呼叫的海洋哺乳动物位置的置信区间:灵敏度分析
Maya Mathur1, John L Spiesberger2, Devin Pascoe2
1University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
JASA express letters
|February 1, 2024
概括
海洋哺乳动物的位置准确性对于环境压力研究至关重要. 目前的方法,如时间差距到达光束形成定位器 (TDOA-BL) 有显著的错误,但顺序边界估计提供可靠的海洋哺乳动物跟踪.
科学领域:
- 声学 声学 在声学方面
- 海洋生物学 海洋生物学
- 生物声学是一种生物声学.
背景情况:
- 准确的海洋哺乳动物定位对于评估环境影响至关重要.
- 位置的置信区间 (CIL) 是从接收器之间的到达时间差异 (TDOA) 来得出的.
- 现有的本地化方法对各种错误源敏感.
研究的目的:
- 评估用于海洋哺乳动物定位的到达光束形成定位器 (TDOA-BL) 时间差异的准确性.
- 为了比较TDOA-BL的性能与所有错误来源的方法.
- 评估TDOA-BL对海洋哺乳动物环境压力研究的适用性.
主要方法:
- 使用模拟来测试到达光束形成定位器 (TDOA-BL) 的时间差异.
- 该研究分析了TDOA的错误,接收器位置,时钟同步和声音速度.
- 序列边界估计作为一种替代的本地化方法.
主要成果:
- TDOA-BL产生了位置的置信区间 (CIL),误差为10-100公里.
- 这些错误往往超过了海洋哺乳动物检测范围.
- 顺序绑定估计始终提供包含真实位置的CIL.
结论:
- 由于错误率很大,TDOA-BL不适合准确地定位海洋哺乳动物.
- 由于TDOA-BL的错误很大,可能会危及对环境压力影响的研究.
- 序列边界估计为海洋哺乳动物跟踪和研究提供了更可靠的方法.
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