论文标题
智能手机之间的水下声学范围
Underwater Acoustic Ranging Between Smartphones
论文作者
论文摘要
我们提出了一种新颖的水下系统，可以在商品智能手机之间执行声学范围。为了实现这一目标，我们设计了一个实时的水下范围协议，该协议计算智能手机之间的飞行时间。为了解决严重的水下多径，我们提出了一种双微粒光量优化算法，该算法可以更可靠地识别直接路径。我们的水下评估表明，我们的系统的中值误差在距离为35 m的距离为0.48-0.86 m。此外，我们的系统可以跨智能手机模型对运行，并在时钟漂移的存在下工作。尽管现有的水下定位研究是针对定制的水文硬件的，但我们认为，我们的工作通过展示了将水下范围功能带入数十亿个现有智能手机的道路，而没有其他硬件，从而破裂了新的基础。
We present a novel underwater system that can perform acoustic ranging between commodity smartphones. To achieve this, we design a real-time underwater ranging protocol that computes the time-of-flight between smartphones. To address the severe underwater multipath, we present a dual-microphone optimization algorithm that can more reliably identify the direct path. Our underwater evaluations show that our system has median errors of 0.48-0.86 m at distances upto 35 m. Further, our system can operate across smartphone model pairs and works in the presence of clock drifts. While existing underwater localization research is targeted for custom hydrophone hardware, we believe that our work breaks new ground by demonstrating a path to bringing underwater ranging capabilities to billions of existing smartphones, without additional hardware.
