Android智能手机高精度GNSS数据集

Android智能手机高精度GNSS数据集

原文：

Android smartphones high accuracy GNSS datasets

Raw GNSS measurements and precise location ground truth

Raw GNSS measurements from Android phones' GNSS (Global Navigation Satellite System) chipset are accessible via Android APIs since 2016. It becomes a bridge between the advances of positioning techniques and the applications of positioning for billions of Android users in the mass market. Over 6000 papers have been published on this topic since its debut. Among all GNSS topics, high precision positioning on smartphones is probably the most attractive one, not just because it spawns over 1/3 of publications, but more importantly, it may trigger a plethora of possible novel applications, such as lane-level driving, mapping, and precise augmented reality.

To facilitate this process, Google releases here the datasets collected from multiple Android phones, accompanied with high accuracy ground truth. This dataset has 39 traces collected from Pixel 4, Pixel 4 XL, and Xiaomi Mi8. They contain CN0, carrier phase, Doppler rate, satellite transmit time, signal arrival time, and other raw GNSS measurements of L1, L5 channels from GPS, Galileo, GLONASS, Beidou, and QZSS. Precise location ground truth files collected using NovAtel SPAN system are provided.

Data is organized into folders with names in this format: YYYY-MM-DD-{Country code in 2 letters}-{Region}-{Collection index}. For example, 2020-05-14-US-MTV-1 indicates the data was collected on May 14, 2020, in Mountain View, United States. Each folder contains one or more sets of following files.

Data is organized into folders with names in this format: YYYY-MM-DD-{Country code in 2 letters}-{Region}-{Collection index}. For example, 2020-05-14-US-MTV-1 indicates the data was collected on May 14, 2020, in Mountain View, United States. Each folder contains one or more sets of following files.

{Phone name}_GnssLog.txt: GnssLogger log file{Phone name}_GnssLog.yyo: RINEX v3 observation file, converted from the GnssLogger logSPAN_{Phone name}_{Report rate}.nmea: Ground truth positions at the phone's position{Phone name}_chipset.nmea: Chipset positions in NMEA format{Phone name}_chipset.kml: Chipset positions in KML format

译：

Android智能手机高精度GNSS数据集

全球导航卫星系统原始测量和精确定位

自2016年以来，Android手机的GNSS（全球导航卫星系统）芯片组的原始GNSS测量数据可通过Android API访问。它成为大众市场上亿万Android用户定位技术进步与定位应用之间的桥梁。自首次发表以来，已经发表了6000多篇论文。在全球导航卫星系统的所有主题中，智能手机上的高精度定位可能是最有吸引力的一个，不仅因为它产生了超过1/3的出版物，而且更重要的是，它可能引发大量可能的新应用，如车道级驾驶、地图和精确增强现实。

为了方便这一过程，谷歌在这里发布了从多部Android手机收集的数据集，并附带了高精度的地面实况。这个数据集收集了来自Pixel 4、Pixel 4 XL和小米Mi8的39条记录道。它们包含来自GPS、Galileo、GLONASS、北斗和QZSS的L1、L5信道的CN0、载波相位、多普勒频率、卫星发射时间、信号到达时间和其他原始GNSS测量值。提供了使用NovAtel-SPAN系统收集的精确定位地面实况文件。

数据按以下格式组织到文件夹中：YYYY-MM-DD-{Country code in 2 letters}-{Region}-{Collection index}。例如，2020-05-14-US-MTV-1表示数据是在2020年5月14日在美国山景城收集的。每个文件夹包含一组或多组以下文件。

数据按以下格式组织到文件夹中：YYYY-MM-DD-{Country code in 2 letters}-{Region}-{Collection index}。例如，2020-05-14-US-MTV-1表示数据是在2020年5月14日在美国山景城收集的。每个文件夹包含一组或多组以下文件。

●{Phone name}_GnssLog.txt: ：GnssLogger日志文件

●{Phone name}_GnssLog.yyo：RINEX v3观察文件，从GnssLogger日志转换而来

●SPAN{Phone name}{Report rate}.nmea：电话所在位置的地面真实位置

●{Phone name}_chipset.nmea：NMEA格式的芯片组位置

●{Phone name}_chipset.kml：KML格式的芯片组位置

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