[4] JOHNSON C. Attitude dilution of precision a new metric for observablity of inflight alignment errors[J]. AIAA Guidance, Navigation, and Control Conference and Exhibit, 2000.
[5] ERNEST J, OHLMEYER T R P. In-flight alignment techniques for navy theater wide missiles[J]. AIAA Guid-ance, Navigation, and Control Conference and Exhibit, 2001.
[6] HAM F M, BROWN R G. Observability, Eigenvalues, and Kalman filtering[J]. IEEE Transactions on Aerospace and Electronic Systems, 1983, 19(2):269-273.
[8] SAVAGE P G. Strapdown analytics[M]. Minn:Strapdown Associates, 2000.