FLAE
Fast Linear Quaternion Attitude Estimator Using Vector Observations for Wahba's Problem, proposed by Jin Wu, Zebo Zhou et al.
Paper of The Codes
The paper has been uploaded as FLAE.pdf. The current version of citation could be: J. Wu, Z. Zhou, B. Gao, R. Li, Y. Cheng and H. Fourati, "Fast Linear Attitude Estimator Using Vector Observations", IEEE Transactions on Automation Science and Engineering, 2017.