Implementations of the major developments in 3D-attitude determination of spacecraft.

1. TRIAD: A Passive System for Determining the Attitude of a Satellite (1964)
2. Davenport's q method: A Vector Approach to the Algebra of Rotations with Applications (1968)
3. SVD method: Attitude Determination using Vector Observations and Singular Value Decomposition (1968)
4. QUEST: Three-axis Attitude Determination from Vector Observations (1981)
5. FOMA: Attitude Determination using Vector Observations, A Fast Optimal Matrix Algorithm (1993)
6. An Analytic Solution to Wahba's Problem (2013)
7. Attitude Determination using Newton's Method on Riemannian Manifold (2015)
8. FLAE: Fast Linear Quaternion Attitude Estimator Using Vector Observations (2017) (Newton's method)
9. FLAE: Fast Linear Quaternion Attitude Estimator Using Vector Observations (2017) (Symbolic method)
10. ESOQ, A Closed-Form Solution to the Wahba Problem (1997)
11. ESOQ-2 Single-Point Algorithm for Fast Optimal Spacecraft Attitude Determination (1997)

1. Markley's 12 test conditions
2. Shuster's method of sequential rotation
3. Markley's correction on Shuster's code
4. Handle quaternion double cover