User Guide
==========

.. toctree::
   :maxdepth: 2

   filtering
   data_association
   motion_models
   coordinate_systems
   astronomy
   mathematical_functions

.. note::

   **Advanced Topics** - Detailed tutorials for specialized applications:
   
   - :doc:`../constrained_filtering` — State-constrained Kalman filtering with equality/inequality constraints
   - :doc:`../hybrid_filtering` — Hybrid linear/nonlinear filtering with Rao-Blackwellized Particle Filters
   - :doc:`../atmosphere_models` — NRLMSISE-00 atmospheric model for satellite drag calculations