GnssLogger App

GnssLogger App - Your Comprehensive Location and Sensor Data Tool

GnssLogger by Google is an essential application designed to enable in-depth analysis and logging of all types of location and sensor data. This includes GPS (Global Positioning System), network location, and other sensor data. The app is compatible with both smartphones and smartwatches, making it a versatile tool for developers and enthusiasts alike.

Features for Smartphones

Home Tab

The Home Tab provides you with control over various data logging options, including:

• Raw GNSS measurements
• GnssStatus
• NMEA messages
• Navigation messages
• Sensor data
• RINEX logs

You can also manage these settings through corresponding switches in this tab.

Log Tab

In the Log Tab, you can:

• View all location and raw measurement data
• Control offline logging using "Start Log," "Stop & Send," and "Timed Log"
• Delete existing log files from disk

Map Tab

The Map Tab allows you to visualize your location data on Google Maps, providing insights into GPS chipsets, Network Location Provider (NLP), Fused Location Provider (FLP), and computed Weighted Least Square (WLS) positions. You can toggle between different map views and location types.

Plots Tab

The Plots Tab offers visualization of:

• CN0 (Signal Strength)
• PR (Pseudorange) Residual
• PRR (Pseudorange Rate) Residual versus time

Status Tab

The Status Tab displays detailed information about all visible GNSS satellites, including GPS, Beidou (BDS), QZSS, Galileo (GAL), GLONASS (GLO), and IRNSS.

SkyPlot Tab

The SkyPlot Tab visualizes data from all visible GNSS satellites using a skyplot, showing the average CN0 of all satellites in view and those used in the fix.

AGNSS Tab

The AGNSS Tab allows you to experiment with Assisted-GNSS functionalities.

WLS Analysis Tab

The WLS Analysis Tab provides visualization of the Weighted Least Square position, velocity, and their uncertainties based on raw GNSS measurements. You can compare these results with those reported by the GNSS chipset.

Features for Watches Running Wear OS 3.0 and Higher

For watches running Wear OS 3.0 and higher, GnssLogger offers the following features:

• Real-time GNSS chipset status information
• Logging of various GNSS and sensor data to CSV and RINEX files

With its comprehensive set of features, GnssLogger is an indispensable tool for anyone looking to analyze, visualize, and log Android location and sensor data effectively.