概括
一个新的矢量组合算法精确地构建了用于激光自混合 (SM) 干扰的方格信号. 这种方法显著降低了计算成本和误差,使得即使有斑点干扰,也可以进行超精确的测量.
科学领域:
- 光学和光子学 在光学和光子学.
- 计量学和测量科学 计量学和测量科学
- 信号处理 信号处理
背景情况:
- 激光自混合 (SM) 干涉度对于超精确的测量至关重要.
- 传统的正方形相解封方法 (QPUM) 需要严格的正方形信号,不匹配引入错误.
- 现有的方法面临信号准确性和计算效率方面的挑战.
研究的目的:
- 介绍SM信号的新型矢量组合方程构建算法.
- 为了使用简单的加法和减法运算来实现严格的正方形信号构造.
- 为了提高SM干扰测量测量的精度和效率.
主要方法:
- 开发了一种矢量组合算法,用于从两个具有相位移的SM信号中构建正方形信号.
- 在多纵向激光SM相位移生成系统中实现并测试了算法.
- 通过实验和模拟研究验证了该方法,包括具有斑点干扰的条件.
主要成果:
- 实现了65nm的位移重建错误,对于一个非静止的目标,峰值到峰值位移为3.193μm.
- 显著降低了计算成本,只需要传统方法的1/34.2时间 (降低97%).
- 算法显示了对斑点干扰的稳定性.
结论:
- 矢量组合算法为SM干涉测量提供了简单,高效和准确的方位信号构造.
- 这种技术提供了计算简单性,快速处理,精确的相位移,斑点免疫和零校准.
- 它是一个理想的解决方案,用于在线测量和低功耗应用中的强大,高实时的SM解调.
更多相关视频
09:10Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
Published on: April 24, 2014
28.6K
11:47Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
Published on: February 27, 2013
16.1K
相关概念视频
Classifying Matter by Composition
90.4K
Matter: Pure Substances and Mixtures
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
90.4K
Mixing Concrete
383
Concrete mixing ensures a homogenous blend where aggregates are well-coated with cement paste. Concrete mixing is typically done using two main types of mixers: batch and continuous. Batch mixers handle one batch at a time, thoroughly combining materials before discharging and receiving the next batch. In contrast, continuous mixers receive a steady flow of ingredients, mixing them consistently and discharging without interruption. Within batch mixers, tilting drum mixers mix with internal...
383
Mixing Time
481
The concept of mixing time is significant in producing a uniform concrete mix with the required strength. The mixing period starts once all components are in the mixer. Initially, the mixer is charged with 10% of the water, followed by the consistent addition of solids and then 80% of the water. The remaining water is added later, within the first quarter of the mixing period. The minimum mixing time varies according to the mixer's capacity; for example, mixers with up to 1 cubic yard...
481
Ready Mixed Concrete
368
Ready-mixed concrete, also known as pre-mixed concrete, is prepared in a centralized plant and then transported in trucks to construction sites where it is ready for placement. This type of concrete is categorized into central-mixed, truck-mixed (or transit-mixed), and shrink-mixed. Central-mixed concrete is entirely prepared at a plant and moved to the site in agitator trucks that rotate at a speed of 2 to 6 rpm. Truck-mixed concrete, on the other hand, has the ingredients batched at the plant...
368
Composite Bodies
1.4K
A composite body is a body made up of multiple parts, connected to form a larger, unified object. Each part has its own weight and center of gravity, which must be considered to determine the center of gravity of the composite body. In cases where the density or specific weight is constant, the center of gravity coincides with the centroid.
Composite bodies have widespread applications in mechanical engineering, from automobiles to aircraft to rockets. For example, an automobile wheel comprises...
Composite bodies have widespread applications in mechanical engineering, from automobiles to aircraft to rockets. For example, an automobile wheel comprises...
1.4K
Composition of Blood
12.1K
The blood in our bodies comprises three major components: blood plasma, formed elements, and the extracellular matrix. Blood plasma is a yellowish fluid that constitutes 55% of the total blood volume. It is primarily made up of water and essential substances such as electrolytes and proteins. Blood plasma serves as a medium for transporting blood cells and also contains nutrients, enzymes, hormones, antibodies, and gases.
Formed elements constitute the remaining 45% of the blood volume. These...
Formed elements constitute the remaining 45% of the blood volume. These...
12.1K
