In-Flight Alignment Using H∞ Filter for Strapdown INS on Aircraft
In-flight alignment is an effective way to improve the accuracy and speed of initial alignment for strapdown inertial navigation system (INS). During the aircraft flight, strapdown INS alignment was disturbed by lineal and angular movements of the aircraft. To deal with the disturbances in dynamic i...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/820305 |
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| _version_ | 1832548444514811904 |
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| author | Fu-Jun Pei Xuan Liu Li Zhu |
| author_facet | Fu-Jun Pei Xuan Liu Li Zhu |
| author_sort | Fu-Jun Pei |
| collection | DOAJ |
| description | In-flight alignment is an effective way to improve the accuracy and speed of initial alignment for strapdown inertial navigation system (INS). During the aircraft flight, strapdown INS alignment was disturbed by lineal and angular movements of the aircraft. To deal with the disturbances in dynamic initial alignment, a novel alignment method for SINS is investigated in this paper. In this method, an initial alignment error model of SINS in the inertial frame is established. The observability of the system is discussed by piece-wise constant system (PWCS) theory and observable degree is computed by the singular value decomposition (SVD) theory. It is demonstrated that the system is completely observable, and all the system state parameters can be estimated by optimal filter. Then a H∞ filter was designed to resolve the uncertainty of measurement noise. The simulation results demonstrate that the proposed algorithm can reach a better accuracy under the dynamic disturbance condition. |
| format | Article |
| id | doaj-art-ff07c318956b4077b06a72d7a3def38d |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-ff07c318956b4077b06a72d7a3def38d2025-02-03T06:14:07ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/820305820305In-Flight Alignment Using H∞ Filter for Strapdown INS on AircraftFu-Jun Pei0Xuan Liu1Li Zhu2Beijing University of Technology, Beijing 100124, ChinaBeijing University of Technology, Beijing 100124, ChinaBeijing University of Technology, Beijing 100124, ChinaIn-flight alignment is an effective way to improve the accuracy and speed of initial alignment for strapdown inertial navigation system (INS). During the aircraft flight, strapdown INS alignment was disturbed by lineal and angular movements of the aircraft. To deal with the disturbances in dynamic initial alignment, a novel alignment method for SINS is investigated in this paper. In this method, an initial alignment error model of SINS in the inertial frame is established. The observability of the system is discussed by piece-wise constant system (PWCS) theory and observable degree is computed by the singular value decomposition (SVD) theory. It is demonstrated that the system is completely observable, and all the system state parameters can be estimated by optimal filter. Then a H∞ filter was designed to resolve the uncertainty of measurement noise. The simulation results demonstrate that the proposed algorithm can reach a better accuracy under the dynamic disturbance condition.http://dx.doi.org/10.1155/2014/820305 |
| spellingShingle | Fu-Jun Pei Xuan Liu Li Zhu In-Flight Alignment Using H∞ Filter for Strapdown INS on Aircraft The Scientific World Journal |
| title | In-Flight Alignment Using H∞ Filter for Strapdown INS on Aircraft |
| title_full | In-Flight Alignment Using H∞ Filter for Strapdown INS on Aircraft |
| title_fullStr | In-Flight Alignment Using H∞ Filter for Strapdown INS on Aircraft |
| title_full_unstemmed | In-Flight Alignment Using H∞ Filter for Strapdown INS on Aircraft |
| title_short | In-Flight Alignment Using H∞ Filter for Strapdown INS on Aircraft |
| title_sort | in flight alignment using h∞ filter for strapdown ins on aircraft |
| url | http://dx.doi.org/10.1155/2014/820305 |
| work_keys_str_mv | AT fujunpei inflightalignmentusinghfilterforstrapdowninsonaircraft AT xuanliu inflightalignmentusinghfilterforstrapdowninsonaircraft AT lizhu inflightalignmentusinghfilterforstrapdowninsonaircraft |