基于VQF的脱导航架构,用于水下车辆的高曲率机动
Bowei Cui1, Yu Lu2, Lei Zhang1
1The College of Engineering, Ocean University of China, Qingdao 266100, China.
Sensors (Basel, Switzerland)
|February 13, 2026
概括
本研究介绍了一种使用多功能四基波器 (VQF) 的脱导航系统,以提高定位精度. 这种新的方法提高了强度,特别是在具有挑战性的高曲率环境中.
科学领域:
- 导航系统工程 导航系统工程
- 机器人技术和自主系统
- 航空航天工程 航空航天工程
背景情况:
- 传统的全合导航架构由于态度误差放大而遭受位置分歧.
- 准确的态度估计对于稳健的导航至关重要,特别是在动态和高曲率的场景中.
- 从主导航过器分离的态度估计在保持准确性和稳定性方面提出了挑战.
研究的目的:
- 提出和验证一个脱的导航架构,以减轻由态度错误引起的位置分歧.
- 为解系统开发一个不确定性量化模型.
- 引入补偿机制,以解决交叉共变量信息的丢失问题.
主要方法:
- 设计了一个脱的导航架构,将态度估计分开成一个独立的模块,使用基于多功能四边形波器 (VQF) 的多功能四边形波器.
- 通过分析VQF的内部校正状态来开发一个不确定性量化模型,以获得可测量的不确定性指标.
- 实施了一种双层补偿机制,利用创新统计和参数化噪声矩阵来传播态度不确定性.
主要成果:
- 拟议的脱架构在定位准确度方面取得了显著的改进.
- 该方法有效地抑制了极端错误,特别是在高曲率和高动态场景中.
- 与传统的全合导航系统相比,观察到增强的稳定性.
结论:
- 基于VQF的脱导航架构提供了一个强大的解决方案,可以在具有挑战性的环境中减轻位置差异.
- 开发的不确定性量化和补偿机制有效地维持了导航性能.
- 这种方法为扩大水下和其他高动态导航系统的能力提供了宝贵的见解.
相关概念视频
01:19Degree of Curvature and Radius of Curvature
520
The degree of curvature and the radius of curvature are fundamental concepts in determining the sharpness or smoothness of a curve. The degree of curvature is a measure of how steeply a curve bends and can be determined using the chord basis or the arc basis. In the chord basis method, the degree of curvature is defined as the central angle subtended by a chord of 30.48 meters, helping in the calculation of the radius of the curve. The arc basis method defines the degree of...
520
01:04¹³C NMR: ¹H–¹³C Decoupling
1.9K
The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
1.9K
01:24Fast Decoupled and DC Powerflow
766
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
766
01:16Vertebral Column: Regions and Curvature
10.8K
The vertebral column or spine is a flexible column that supports the head, neck, and body and allows for their movements. It also protects the spinal cord.
Regions of the Vertebral Column
In an adult, the spine is subdivided into five regions: the cervical, the thoracic, the lumbar, the sacral, and the coccygeal region. The spine initially develops as a series of 33 vertebrae; after 20 years of age, the nine bones in the sacral region, five sacral, and four coccygeal bones fuse to form...
Regions of the Vertebral Column
In an adult, the spine is subdivided into five regions: the cervical, the thoracic, the lumbar, the sacral, and the coccygeal region. The spine initially develops as a series of 33 vertebrae; after 20 years of age, the nine bones in the sacral region, five sacral, and four coccygeal bones fuse to form...
10.8K
01:17Space-Time Curvature and the General Theory of Relativity
4.6K
In 1905, Albert Einstein published his special theory of relativity. According to this theory, no matter in the universe can attain a speed greater than the speed of light in a vacuum, which thus serves as the speed limit of the universe.
This has been verified in many experiments. However, space and time are no longer absolute. Two observers moving relative to one another do not agree on the length of objects or the passage of time. The mechanics of objects based on Newton's laws of...
This has been verified in many experiments. However, space and time are no longer absolute. Two observers moving relative to one another do not agree on the length of objects or the passage of time. The mechanics of objects based on Newton's laws of...
4.6K
01:14Polymer Classification: Architecture
3.9K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
3.9K