Literature - skye-git/AU_estimator_doc GitHub Wiki
Actuation Configuration
Quaternions
Hamiltonian Quaternions
NASA convention (currently not used by us)
Observability
- http://www.wlxt.uestc.edu.cn/wlxt/ncourse/ecb/web/files/10_Nonlinear_controllability_and_observability.pdf
- http://robotics.usc.edu/publications/media/uploads/pubs/611.pdf