6N. A. J. Witt, R. Sutton and K. M. Miller.Recent technological advances in the control and guidance of ships [J]. J. Navigation. ISSN: (0354-5621), 1994, 47(2): 236-258.
7Kallstrom C G. Identification and adaptive control applied to ship steering [D]. Lund, Sweden: Lund Institute of Technology, 1982.