导航级干扰度空气核心反共振光纤陀螺仪,具有增强的热稳定性
Maochun Li1, Yizhi Sun2,3,4, Shoufei Gao2,3,4
1Tianjin Key Laboratory of Quantum Precision Measurement Technology, Tianjin Navigation Instruments Research Institute, Tianjin, 300131, China.
Nature communications
|April 14, 2025
概括
这项研究引入了一种新的空气核心光纤陀螺仪 (IFOG),实现了导航级性能. 先进的纤维线圈表现出卓越的稳定性和降低的热敏度,用于高精度的惯性导航.
科学领域:
- 光子学和光学工程的工程.
- 惯性导航系统 惯性导航系统
- 材料科学 材料科学 材料科学
背景情况:
- 光纤陀螺仪 (FOG) 对于惯性导航至关重要.
- 传统的固核FOG在性能和环境适应性方面存在局限性.
- 空气核心纤维具有增强FOG特性的潜力.
研究的目的:
- 开发和演示一个导航级的干扰度空中核光纤陀螺仪 (IFOG).
- 为了评估使用截断的双嵌套反共振无节点纤维 (tDNANF) 的新型四极线圈的性能.
- 为了评估空气核心IFOG与固体核心FOG相比的热灵敏度.
主要方法:
- 使用了469米tDNANF线圈,采用四极绕配置.
- 使用放大自发发射 (ASE) 源 (1525-1565 nm) 进行测试.
- 测量极化灭绝比 (PER),角随机步行 (ARW) 和偏差不稳定性 (BI).
- 与传统的固核FOG相比,热敏度的比较.
主要成果:
- 达到~20dB的PER,表明极化纯度高.
- 证明了导航级性能,ARW为0.00383度/√h,BI为0.0017度/h.
- 与固体FOG相比,空气核心FOG的热敏度明显较低 (减少9.24/10.68/6.82).
- 这是空中核心FOG首次报告的导航级性能.
结论:
- 开发的空中核心IFOG符合导航级要求.
- tDNANF技术可以实现低损耗,低曲损失和高极化纯度.
- 空心FOG提供了卓越的环境适应性,特别是热稳定性,用于先进的惯性导航.
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