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首页> 外文期刊>PLoS One >The applicability of recreation-grade GNSS receiver (GPS watch, Suunto Ambit Peak 3) in a forested and an open area compared to a mapping-grade receiver (Trimble Juno T41)
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The applicability of recreation-grade GNSS receiver (GPS watch, Suunto Ambit Peak 3) in a forested and an open area compared to a mapping-grade receiver (Trimble Juno T41)

机译：与绘图级接收器相比，娱乐级GNSS接收器（GPS手表，Suunto Ambit Peak 3）在森林和开放区域中的适用性（Trimble Juno T41）

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摘要

Due to developments in global navigation satellite systems (GNSS) and the miniaturization of their components, the usage of Global Positioning System (GPS) is no longer restricted to professional applications, but has become available in various consumer type devices, such as wristwatches. These commercial devices, however, were primarily designed for tracking activities in predominately urban settings and their accuracy has not been tested in forested areas. In this study, we present an assessment of the positional accuracy of a GPS watch (Ambit Peak 3, Suunto, Finland) under different forest cover types, seasons and meteorological conditions within the Whitehall Forest GPS Test Site located in Athens, Georgia, USA. As a standard of comparison, the performance of the GPS watch measurements was juxtaposed to that of a mapping-grade receiver (Juno T41, Trimble Inc., USA). In this study, we analyzed the differences between the determined and control positions using root-mean-square-error (RMSE), along with the distribution of observed positions through the standard deviational ellipse. The results suggest that the seasonal variations contributed to a statistically significant impact on the RMSE values for the GPS watch. However, there were no statistically significant differences in horizontal position accuracy by forest cover-type when using the GPS watch. Furthermore, no significant differences were found in horizontal position accuracy during the leaf-off period between the RMSE values for the GPS watch and those of the mapping-grade receiver. Lastly, the positional accuracies for both types of receivers were found to be weakly, but significantly correlated with fluctuations in air temperature and absolute humidity.
机译：由于全球导航卫星系统（GNSS）的发展和其组件的小型化，全球定位系统（GPS）的使用不再限于专业应用，但已在各种消费类设备中可用，例如手表。然而，这些商业设备主要被设计用于在主要的城市环境中跟踪活动，并且他们的准确性尚未在森林区域进行测试。在这项研究中，我们在Whitehall森林GPS测试网站内的不同森林覆盖类型，季节和气象条件下，对位于美国的雅典雅典的不同森林覆盖类型，季节和气象条件下，对GPS手表（Ambit Peak 3，Suunto，Finland）的定位准确性进行了评估。作为一个比较标准，GPS手表测量的性能并置于绘图级接收器（Juno T41，Trimble Inc.，USA）的性能。在这项研究中，我们通过螺根均方误差（RMSE）分析了所确定和控制位置之间的差异，以及通过标准偏差椭圆的观察位置的分布。结果表明，季节性变化导致对GPS手表的RMSE值的统计上显着影响。然而，使用GPS手表时，森林覆盖型水平位置精度没有统计学上显着的差异。此外，在GPS手表的RMSE值与绘图级接收器的RMSE值之间的叶子关闭期间，在水平位置精度下没有发现显着差异。最后，发现两种接收器的位置精度弱，但与空气温度和绝对湿度的波动显着相关。

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