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A new approach for SINS stationary self-alignment
the alignment model established in this paper, is complete observable, which brings the excellent performance of the filter as well as the high accuracy and speed of the alignment. Compared with the traditional initial alignment technology, the new approach have such advantages as follow: it could estimate all states include east gyro drift rate and azimuth misalignment angle accurately in short time; higher alignment accurate; shorter alignment time; more self-contained and less calculation. Therefore, the new approach is a preferable choice for SINS stationary self-alignment. Reference[1] Bar-Itzhack I Y, Bermant N,“Control theoretic approach to inertial navigation systems”, AIAA Journal of Guidance, Control and Dynamics, 1988, Vo. 11, No. 3, pp. 237-245. [2] Goshen-Meskin D, Bar-Itzhack I Y, “Unified approach to inertial navigation system error modeling”, AIAA Journal of Guidance, Control and Dynamics, 1992, Vo. 15, No. 3, pp. 648-653. [3] YEON FUH JIANG, YU PING LIN, “Error Estimation of INS Ground Alignment Through Observability Analysis”, IEEE Transaction on Aerospace and Electronic Systems, 1992, Vo. 28, Vo. 1, pp. 92-97. [4] JANG GYU LEE, CHAN GOOK PARK, HEUNG WON PARK,“Multiposition Alignment of Strapdown Inertial Navigation System”, IEEE Transaction on [5] JIANG CHENG FANG, DE JUN WAN, “A Fast Initial Alignment Method for Strapdown Inertial Navigation System on Stationary Base”, IEEE Transactions on Aerospace and Electronic Systems, 1996, Vo. 32, No. 4, pp. 1501-1505. [6] Sage A P, Husa G W, “Adaptive fi ltering with unknown prior statistics”, Proceedings of Joint Automatic Control Conference, 1969, pp. 760-769 [7] Zhang Changyun, “Approach to Adaptive Filtering Algorithm”, Acta Aeronautica et Astronautica Sinica, 1998, Vo. 19, No. 7, pp. 96-99. [8] WANG Yonggang, WANG Shunhong, “Improved Sage- Husa Filter and its Application in GPS/INS Fault Tolerant Integrated Navigation”, Journal of Chinese Inertial Technology, 2003, Vo. 11, No. 5, pp. 29-32. [9] ZHANG Hongwei, DONG Jinming, LV Dan, “Improved Sage-Husa Filter and Its Application in INS/ GPS”, Navigation, 2005, No. 3, pp. 107-111. |
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