First responder location and tracking using Synthetic Aperture Navigation

IEEE/ION Position Location and Navigation Symposium : [proceedings]. IEEE/ION Position Location and Navigation Symposium Pub Date : 2010-05-04 DOI:10.1109/PLANS.2010.5507250

L. Haas, M. Harlacher

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引用次数: 9

Abstract

The Synthetic Aperture Navigation (SAN) signal processing algorithm identifies the desired line of sight (LOS) signal component by exploiting user motion. As implied by the name, it forms a synthetic aperture along the user trajectory by taking multiple snapshots of signal correlation with the replica waveform over some period of time as the user moves. The synthetic aperture serves as an array, which enables beamforming with a single-element antenna. Fundamentally, this method discriminates between different signal components (e.g., line of sight and multipath) by their directions of arrival. SAN places the antenna array gain on the desired signal component and places nulls on all other components. This operation is applied to data from all correlators in the receiver, thus effectively providing the receiver discriminator with nearly multipath-free measurements. SAN is even able to produce a quality line of sight (LOS) measurement when the LOS component is much weaker than multipath.

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使用合成孔径导航定位和跟踪第一响应者

合成孔径导航(SAN)信号处理算法通过利用用户运动来识别期望的视线信号分量。顾名思义，它通过在用户移动的一段时间内对与复制波形相关的信号进行多次快照，沿着用户轨迹形成一个合成孔径。合成孔径作为阵列，使波束形成与单元件天线。从根本上说，这种方法根据不同的信号分量(例如，视线和多路径)的到达方向来区分它们。SAN将天线阵列增益放在所需的信号分量上，并在所有其他分量上放置null。该操作适用于来自接收机中所有相关器的数据，从而有效地为接收机鉴别器提供几乎无多径的测量。SAN甚至能够在视线(LOS)组件比多路径弱得多的情况下产生高质量的视线(LOS)测量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE/ION Position Location and Navigation Symposium : [proceedings]. IEEE/ION Position Location and Navigation Symposium

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