Research on Inertial Isolation Rotation Modulation of Dual-Axis Inertial Navigation Based on Multi-Error Coupling Characteristics
Currently, research on the rotational modulation of dual-axis inertial navigation for isolated carrier motion does not provide sufficient solutions for the compensation of the gyroscope scale factor error caused by the Earth’s rotation. Moreover, it is primarily applied to ships with low maneuverabi...
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MDPI AG
2025-01-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/12/1/47 |
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| author | Bo Zhang Changhua Hu Silin Hou Jianxun Zhang Jianfei Zheng Xuan Liu |
| author_facet | Bo Zhang Changhua Hu Silin Hou Jianxun Zhang Jianfei Zheng Xuan Liu |
| author_sort | Bo Zhang |
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| description | Currently, research on the rotational modulation of dual-axis inertial navigation for isolated carrier motion does not provide sufficient solutions for the compensation of the gyroscope scale factor error caused by the Earth’s rotation. Moreover, it is primarily applied to ships with low maneuverability and has not yet been implemented in the field of pure inertial guidance weapons. A dual-axis inertial isolation rotation modulation method is proposed to address this issue, taking into account the application characteristics of long-endurance guided weapons. An analysis of the system error characteristics under the coupling of multiple error sources acting on IMU was conducted, and it was found that the angular velocity of the inertial isolation carrier can significantly reduce the output error of the IMU. A dual-axis inertial isolation shaft system installation error compensation algorithm was designed, and an improvement was made based on the traditional sixteen-sequence rotation scheme to compensate for the projection components of the Earth’s rotation and carrier motion on the inner and outer frame rotation axes, achieving the inertial isolation rotation modulation function of dual-axis inertial navigation. Based on the attitude changes in long-range guided weapons, Monte Carlo simulation verification was conducted, and the results showed that this scheme can improve inertial navigation accuracy by 10% to 20%. |
| format | Article |
| id | doaj-art-052a7b3c7cbf40aa90430b93d0c6793b |
| institution | Kabale University |
| issn | 2226-4310 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj-art-052a7b3c7cbf40aa90430b93d0c6793b2025-01-24T13:15:37ZengMDPI AGAerospace2226-43102025-01-011214710.3390/aerospace12010047Research on Inertial Isolation Rotation Modulation of Dual-Axis Inertial Navigation Based on Multi-Error Coupling CharacteristicsBo Zhang0Changhua Hu1Silin Hou2Jianxun Zhang3Jianfei Zheng4Xuan Liu5204 Department, Missile Engineering College, Rocket Force University of Technology, Xi’an 710038, China204 Department, Missile Engineering College, Rocket Force University of Technology, Xi’an 710038, ChinaXi’an Aerospace Precision Mechatronics Institute, Xi’an 710100, China204 Department, Missile Engineering College, Rocket Force University of Technology, Xi’an 710038, China204 Department, Missile Engineering College, Rocket Force University of Technology, Xi’an 710038, ChinaXi’an Aerospace Precision Mechatronics Institute, Xi’an 710100, ChinaCurrently, research on the rotational modulation of dual-axis inertial navigation for isolated carrier motion does not provide sufficient solutions for the compensation of the gyroscope scale factor error caused by the Earth’s rotation. Moreover, it is primarily applied to ships with low maneuverability and has not yet been implemented in the field of pure inertial guidance weapons. A dual-axis inertial isolation rotation modulation method is proposed to address this issue, taking into account the application characteristics of long-endurance guided weapons. An analysis of the system error characteristics under the coupling of multiple error sources acting on IMU was conducted, and it was found that the angular velocity of the inertial isolation carrier can significantly reduce the output error of the IMU. A dual-axis inertial isolation shaft system installation error compensation algorithm was designed, and an improvement was made based on the traditional sixteen-sequence rotation scheme to compensate for the projection components of the Earth’s rotation and carrier motion on the inner and outer frame rotation axes, achieving the inertial isolation rotation modulation function of dual-axis inertial navigation. Based on the attitude changes in long-range guided weapons, Monte Carlo simulation verification was conducted, and the results showed that this scheme can improve inertial navigation accuracy by 10% to 20%.https://www.mdpi.com/2226-4310/12/1/47dual-axis inertial navigationinertial isolationaxis installation error |
| spellingShingle | Bo Zhang Changhua Hu Silin Hou Jianxun Zhang Jianfei Zheng Xuan Liu Research on Inertial Isolation Rotation Modulation of Dual-Axis Inertial Navigation Based on Multi-Error Coupling Characteristics Aerospace dual-axis inertial navigation inertial isolation axis installation error |
| title | Research on Inertial Isolation Rotation Modulation of Dual-Axis Inertial Navigation Based on Multi-Error Coupling Characteristics |
| title_full | Research on Inertial Isolation Rotation Modulation of Dual-Axis Inertial Navigation Based on Multi-Error Coupling Characteristics |
| title_fullStr | Research on Inertial Isolation Rotation Modulation of Dual-Axis Inertial Navigation Based on Multi-Error Coupling Characteristics |
| title_full_unstemmed | Research on Inertial Isolation Rotation Modulation of Dual-Axis Inertial Navigation Based on Multi-Error Coupling Characteristics |
| title_short | Research on Inertial Isolation Rotation Modulation of Dual-Axis Inertial Navigation Based on Multi-Error Coupling Characteristics |
| title_sort | research on inertial isolation rotation modulation of dual axis inertial navigation based on multi error coupling characteristics |
| topic | dual-axis inertial navigation inertial isolation axis installation error |
| url | https://www.mdpi.com/2226-4310/12/1/47 |
| work_keys_str_mv | AT bozhang researchoninertialisolationrotationmodulationofdualaxisinertialnavigationbasedonmultierrorcouplingcharacteristics AT changhuahu researchoninertialisolationrotationmodulationofdualaxisinertialnavigationbasedonmultierrorcouplingcharacteristics AT silinhou researchoninertialisolationrotationmodulationofdualaxisinertialnavigationbasedonmultierrorcouplingcharacteristics AT jianxunzhang researchoninertialisolationrotationmodulationofdualaxisinertialnavigationbasedonmultierrorcouplingcharacteristics AT jianfeizheng researchoninertialisolationrotationmodulationofdualaxisinertialnavigationbasedonmultierrorcouplingcharacteristics AT xuanliu researchoninertialisolationrotationmodulationofdualaxisinertialnavigationbasedonmultierrorcouplingcharacteristics |