ISTA GNSS/IMU Logger is an Android based application capable of logging GNSS data in raw measurement format/ RINEX 3.03 format and Sensor data embedded inside the Android device. The Logger is based on GNSSLogger developed by Google Inc. and has been extended with numerous feature such as RINEX and Sensor Logging etc.

Currently, the logger is capable of recording GNSS data from GPS/GALILEO/ BEIDOU for L1/L5/E1B/E1C/E5A (as supported by the device). The logger uses most recent APIs to log GNSS measurements in the RINEX 3.03 format (Pseudorange, Carrier-Phase, Doppler and Noise level).

For the Sensor logging, the application can log Accelerometer (m/s2), Gyroscope (rad/s) and Magnetometer (μT) data.

The user can individually log any data type or they can log GNSS and Sensor data with one single press of a button. The logged files can be sent via E-mail and are stored inside "GNSS-IMU Logger" folder generated in the root directory of your Android device.

GNSS data is logged in GPS time scale and sensor data in the internal Android UNIX time that is synchronized to UTC via the mobile phone network to allow combined GNSS/IMU processing by the following software tools. GNSS time scale Format conversion tools for inertial data can be obtained from (https://www.unibw.de/lrt9/lrt-9.2/forschung/ista-logger). Currently GPS time is 18 s ahead of UTC.

Useful Resources :

RTKLib :
http://www.rtklib.com/

MuSNAT (Multi-Sensor Navigation Analysis Tool):
https://www.unibw.de/lrt9/lrt-9.2/software-packages/musnat

Inertial Explorer (Novatel Inc.) :
https://novatel.com/products/waypoint-software/inertial-explorer

GNSS Analysis Tool : https://developer.android.com/guide/topics/sensors/gnss

This application is developed during the tenure of project "RAMBO" (Real-Time Kinematic Positionierung am Mobilfone) funded by the Federal Ministry of Transport and Digital Infrastructure and administered by the project management agency of the German Aerospace Center (DLR) in Bonn.

We highly appreciate your feedback and suggestions for the improvement of our Logger.

Disclaimer : The GNSS/IMU Logger is intended solely for education and research purposes. It is not, and is not intended, for any commercial use till date. The quality of GNSS or/and IMU data is completely device specific and UniBwM gives no guarantee for ensuring the accuracy of data logged and the processing afterwards. All information provided by the GNSS/IMU Logger is provided in good faith. However , we make no representation or warranty of any kind, express or implied, regarding the accuracy, adequacy, validity, reliability, availability, or completeness of any information and measurements provided by the GNSS/IMU Logger.