强大的激光自混合排位解调通过连续波纹-希尔伯特变换高精度加速度计校准
Applied optics
|August 12, 2025
概括
一个新的混合算法通过激光干扰测量改进了加速度计校准. 这种方法精确地调节位移信号,克服来自高密度格子的噪声,以实现可靠的传感器校准.
科学领域:
- 计量学和仪器仪表技术
- 光学物理学的光学物理学
- 信号处理 信号处理
背景情况:
- 激光自混合格子干扰仪提供紧,准确的加速度计校准.
- 高线密度格子 (4700 l/mm) 创建信号异常值,阻碍了传统的调节.
- 阶段跳跃和噪声使干扰度系统中的位移解调复杂化.
研究的目的:
- 为在高噪声条件下的激光干扰测量开发一个强大的位移解调算法.
- 为了提高加速度计校准的准确性,使用Cr格.
- 为了克服密集格子干涉测量的衍生方法的局限性.
主要方法:
- 开发了一种混合算法,将连续波形变换和希尔伯特变换结合起来.
- 该算法被应用到Cr网格的干扰度信号去调节.
- 实验验证是使用商业MEMS加速度计进行的.
主要成果:
- 混合算法实现了强大的位移解调,尽管有密集的格子异常值.
- 100个数据段被成功地用高合适度 (R2=0.9964) 进行了解调.
- 演算的加速度计灵敏度显示,与名义值的微小偏差为0.1%.
结论:
- 拟议的混合算法使惯性传感器的高精度动态校准成为可能.
- 这种方法为需要精确传感器测量的现场应用提供了一个范例.
- 该技术有效地解决了网格干涉测量的噪声和相位跳跃问题.
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