Modeling and Improving the Energy Performance of GPS Receivers for Location Services
Modeling and Improving the Energy Performance of GPS Receivers for Location Services
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DOI：
10.1109/jsen.2019.2962613
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发表时间：
2020-04
影响因子：
4.3
通讯作者：
Kongyang Chen;Guang Tan;Jiannong Cao;Mingming Lu;Xiaopeng Fan
中科院分区：
文献类型：
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作者：
Kongyang Chen;Guang Tan;Jiannong Cao;Mingming Lu;Xiaopeng Fan
集成的GPS接收机已经成为当今移动的设备中的基本模块。虽然GPS模块作为基于位置的服务的基石，但由于高计算负载而具有严重的电池消耗问题。本文旨在揭示关键的软件参数对GPS能耗的影响，通过建立一个能源模型，一个标准的GPS接收机架构，发现在学术和工业设计。特别是，我们的测量结果表明，接收器的能量消耗在很大程度上是线性的跟踪卫星的数量以及原始GPS信号的长度。这导致能量有效的选择性跟踪算法的设计与大卫星几何精度因子（GDOP）的权重，良好的空间分布，和大的信号强度。在三种典型场景下的真实的实验结果表明，与标准GPS接收机相比，该算法在定位精度和能耗之间具有更好的平衡。
Integrated GPS receivers have become a basic module in today’s mobile devices. While serving as the cornerstone for location based services, GPS modules have a serious battery drain problem due to high computation load. This paper aims to reveal the impact of key software parameters on GPS energy consumption, by establishing an energy model for a standard GPS receiver architecture as found in both academic and industrial designs. In particular, our measurements show that the receiver’s energy consumption is in large part linear with the number of tracked satellites as well as the length of the raw GPS signal. This leads to an energy efficient design of selective tracking algorithm with large satellite Geometric Dilution of Precision (GDOP) weight, well spatial distribution, and large signal intensity. Real experimental results on three typical scenarios show that our selective tracking algorithm provides better tradeoff between positioning accuracy and energy consumption than standard GPS receivers.