[1] Cai Tijing,. Novel gravity passive navigation system [J]. Journal of Southeast University (English Edition), 2006, 22 (1): 59-63. [doi:10.3969/j.issn.1003-7985.2006.01.013]
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Novel gravity passive navigation system(
)
新型的重力无源导航系统
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 22
- Issue:
- 2006 1
- Page:
- 59-63
- Research Field:
- Electromagnetic Field and Microwave Technology
- Publishing date:
- 2006-03-20
Info
- Title:
- Novel gravity passive navigation system
- 新型的重力无源导航系统
- Author(s):
- Cai Tijing
- Department of Instrument Science and Technology, Southeast University, Nanjing 210096, China
- 蔡体菁
- 东南大学仪器科学与工程系, 南京 210096
- PACS:
- TN967.2
- DOI:
- 10.3969/j.issn.1003-7985.2006.01.013
- Abstract:
- According to the characteristics of gravity passive navigation, this paper presents a novel gravity passive navigation system(GPNS), which consists of the rate azimuth platform(RAP), gravity sensor, digitally stored gravity maps, depth sensor and relative log. The algorithm of rate azimuth platform inertial navigation system, error state-space equations, measurement equations and GPNS optimal filter are described.In view of the measurements made by an onboard gravity sensor the Eotvos effect is introduced in the gravity measurement equation of a GPNS optimal filter.A GPNS is studied with the Matlab/Simulink tools;simulation results demonstrate that a GPNS has small errors in platform attitude and position.Because the inertial navigation platform is the rate azimuth platform in the GPNS and gravity sensor is mounted on the rate azimuth platform, the cost of the GPNS is lower than existing GPNS’s and according to the above results the GPNS meets the need to maintain accuracy navigation for underwater vehicles over long intervals.
- 针对重力无源导航的特点, 提出了一种由速率方位惯性平台、重力传感器、重力图、深度计和相对计程仪组成的新型重力无源导航系统, 给出了速率方位惯性平台系统的导航算法、重力无源导航系统的最优滤波器、误差状态方程和测量方程.考虑到运动载体上重力传感器的输出特性, 在最优滤波器的重力观测方程中引入了厄特弗斯效应.应用Matlab/Simulink工具对此重力无源导航系统进行了计算机仿真研究, 仿真结果表明此重力无源导航系统的平台姿态角误差和定位误差小, 能够满足水下运载体长期高精度导航的要求.又由于本系统采用了速率方位惯性平台, 且把重力敏感器置于其上, 省去了重力仪, 所以与现有的重力无源导航系统相比成本较低.
References:
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Memo
- Memo:
- Biography: Cai Tijing(1961—), male, doctor, professor, caitij@seu.edu.cn.