The GNSS Quality Control (QC) library is an advanced library that proposes from basic to advanced GNSS and Geodesy processing pipelines.

It is made possible by the complex combination of several frameworks and libraries. It is important to understand this library's features & options.

This library is part of the NAV-Solutions framework and is licensed under the Mozilla V2 Public license.

The fundammental blocks that we rely upon, at all times

• Hifitime by Nyx-Space that provides Epoch and TimeScale definitions
• GNSS by NAV-solutions that provides Constellation and SV definitions
• Qc Traits by NAV-solutions that provides shared behavior by all GNSS libraries
• The RINEX parser by NAV-solutions because we consider the RINEX files as the most fundamental. It is currently not possible to build this library without RINEX support (say: SP3 only application). But that could easily be changed.

• flate2 is activated by default, and allows Gzip compressed files to be naturally supported.
• sp3 is activated by default, because we consider people interested in GNSS post processing are interested in high precision at all times. This is easily changed by de-activating this crate feature.

## Navigation feature

nav is the most advanced feature. It allows post processed navigation and is the heaviest option. This option relies on ANISE by Nyx-Space.

If you are only interested in file processing and management, you should not activate Post Processed navigation support.

Without navigation support, this library will allow GNSS context creation and basic processing. You will not access the most advanced solvers.