Research Initiation: Exploiting Multiple Paths in Passive Limits on the Utility of Ranging and Inverse Mapping Applications

这项工作研究了传感器阵列在被动测距中的应用。特别是，它侧重于使用假设的多径传播条件的先验知识来提高波前曲率仅为微小的远距离区域的距离精度。过去，在简化的水声环境中已经证明了显著的性能改进。这项研究正在评估不完全的先验知识对实现理论收益的能力的影响。该研究还试图将该方法扩展到逆映射，即根据信号测量确定信道参数。

This work investigates the use of arrays of sensors for passive ranging. In particular, it focuses on the use of a priori knowledge of assumed multipath propagation conditions to improve range accuracy in the distant region where the curvature of the wavefront is only slight. Significant performance gains have been demonstrated in the past in a simplified underwater acoustic setting. This study is evaluating the impact of incomplete a priori knowledge on the ability to achieve theoretical gains. The study also is attempting to extend the method to inverse mapping, i.e. determination of the channel parameters from signal measurements.