iTPS: an improved location discovery scheme for sensor networks with long-range beacons
iTPS: an improved location discovery scheme for sensor networks with long-range beacons
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DOI：
10.1016/j.jpdc.2004.09.002
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发表时间：
2005-02-01
影响因子：
3.8
通讯作者：
Cheng, XZ
中科院分区：
文献类型：
--
作者：
Thaeler, A;Min, D;Cheng, XZ
在本文中，我们提出了基于时间的定位方案（iTPS），这是一种用于具有远程信标的传感器网络的纯本地化位置检测方案。iTPS依靠在每个传感器本地测量的射频（RF）信号的到达时间差（TDoA）来检测从传感器到四个基站的距离差。这些距离差被组合起来，通过三边测量法来估计传感器的位置。iTPS是对TPS（程等人，IEEE INFOCOM，2004）的一种改进，当传感器靠近任何基站时，TPS会产生两个模糊的位置估计。iTPS大大减少了模糊估计的数量，并能提高精度。iTPS的特点包括传感器的通信开销低，不需要时间同步，由于简单的代数运算计算开销低，以及高可扩展性。我们进行了广泛的模拟来测试iTPS，并将其与TPS进行比较。所得结果表明，iTPS是一种用于具有远程信标站的传感器网络中位置发现的高效且有效的方案。（C）2004爱思唯尔公司。保留所有权利。
In this paper, we present time-based positioning scheme (iTPS), a purely localized location detection scheme for sensor networks with long-range beacons. iTPS relies on time difference of arrival (TDoA) of radio frequency (RF) signals measured locally at each sensor to detect range differences from the sensor to four base stations. These range differences are combined to estimate the sensor location through trilateration. iTPS is an improvement over TPS (Cheng et al., IEEE INFOCOM, 2004), which produces two ambiguous position estimates when sensors are close to any base station. iTPS substantially reduces the number of ambiguous estimates and can improve accuracy. Features of iTPS include low communication overhead for sensors, no requirements for time synchronization, low computational overhead due to simple algebraic operations, and high scalability. We conduct extensive simulation to test iTPS and compare it with TPS, The obtained results show that iTPS is an efficient and effective scheme for location discovery in sensor networks with long-range beacon stations. (C) 2004 Elsevier Inc. All rights reserved.