Accuracy and time to first fix using consumer-grade GPS receivers
Accuracy and time to first fix using consumer-grade GPS receivers
复制标题
使用消费级 GPS 接收器的首次定位精度和时间
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
J. Ikonen
中科院分区：
文献类型：
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作者：
M. Lehtinen;A. Happonen;J. Ikonen
本研究的主要目的是测量首次定位值的时间，并分析消费级GPS接收机首次定位坐标的精度。选择了三种不同的测试环境：开阔天空、半城市和城市环境，使用三个GPS接收器进行测试。此外，辅助GPS性能和A-GPS对TTFF的效果进行了测试与两个不同的接收机。首次定位的准确度和首次定位的时间由这些测量的结果确定。根据结果，确定了环境和设备对位置精度和启动时间的影响。在启动时间没有协助没有显着的差异，观察到全球定位系统接收器之间。然而，观察到的最准确和最不准确的接收器之间的第一次定位的准确性是显着的。
The primary objectives in this study were to measure time to first fix values and analyze the accuracy of the first fix coordinates of consumer-grade GPS receivers. Three different test surroundings were selected: the open sky, semi-urban and urban environments, which were tested with three GPS receivers. In addition, assisted GPS performance and the effect of A-GPS on the TTFF was tested with two different receivers. The accuracy of the first fix and time to first fix was determined by the results of these measurements. Based on the results, the impact of the surroundings and devices on position accuracy and start-up times was determined. In start-up times without assisting no remarkable differences were observed between GPS receivers. However, the observed accuracy of the first fix between the most and least accurate receiver was significant.