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相关概念视频

Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

528
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
528

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相关实验视频

Updated: May 10, 2025

Measuring the Behavioral Effects of Intraocular Scatter
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基于散射器能量聚焦的距离扩散目标的角度估计.

Zekai Huang1,2, Peiwu Jiang1,2, Maozhong Fu3

  • 1School of Electronics and Communication Engineering, Shenzhen Campus, Sun Yat-sen University, Shenzhen 518107, China.

Sensors (Basel, Switzerland)
|April 28, 2025
PubMed
概括

这项研究引入了一个新的宽带雷达角度估计算法,用于范围扩展目标. 该方法有效地聚焦散射器能量,改善宽带雷达系统的检测性能和角度精度.

关键词:
角度估计的角度估计.聚焦能源的能源集中.范围扩散目标范围的范围扩散.宽带雷达是一种宽带的雷达.

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Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System
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Measuring Spatially- and Directionally-varying Light Scattering from Biological Material
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相关实验视频

Last Updated: May 10, 2025

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科学领域:

  • 雷达系统工程 雷达系统工程
  • 信号处理 信号处理
  • 电磁学 电磁学 电磁学 电磁学

背景情况:

  • 宽带雷达对于现代应用至关重要.
  • 传统的单脉冲技术在扩展范围的目标上失败.

研究的目的:

  • 为宽带线性频率调制 (LFM) 信号开发一种新的单脉冲角度估计算法.
  • 解决宽带雷达中范围扩展目标的角度估计的挑战.

主要方法:

  • 使用最高能量散射器的相位作为相位补偿的参考.
  • 积累补偿散射器用于能量聚焦.
  • 通过对焦信号的和差幅度比较来估计角度.

主要成果:

  • 拟议的方法有效地聚焦散射器能量,提高探测器性能.
  • 与现有方法相比,实现了较低的信号噪声比 (SNR) 门和更高的角度精度.
  • 通过模拟和与探测器集成,证明了实际适用性.

结论:

  • 开发的算法为宽带,范围扩展的目标提供了有效的角度估计.
  • 能够在宽带雷达框架内进行跟踪和成像.
  • 扩展到其他传感器系统的潜力,传感器技术的进步.