GROOPS Documentation and Cookbook

GROOPS is a software toolkit for gravity field recovery, GNSS processing, and statistical analysis of time series and spatial data. It is licensed under GPLv3 and hosted at GitHub.

GROOPS depends on data files such as Earth rotation, Love numbers, and GNSS meta information. An initial data set that is regularly updated is available on our FTP server, https://ftp.tugraz.at/outgoing/ITSG/groops. You can choose between downloading the data directory or a single data.zip with the same content.

Additional tutorial videos are available at our YouTube channel. Questions about the usage of GROOPS can be posted in the Discussions.

General Information

File formats and basic concepts for using GROOPS and its GUI.

Config files
Parser
Loops and conditions
Constants and the setting file
Parallelization
Graphical User Interface (GUI)
File formats

Mathematic Fundamentals

Description of methods used throughout GROOPS.

Robust least squares adjustment
Basis splines
Autoregressive models

Cookbook

Recipes to explore the GROOPS feature set.

Instrument data handling
GNSS satellite orbit determination and station network analysis
GNSS precise point positioning (PPP)
Kinematic orbit determination of LEO satellites
Gravity field determination from POD data
GRACE gravity field recovery
Regional geoid determination

Program/Class Reference

Reference and documentation for all programs and classes in GROOPS.

List of programs
List of classes