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相关概念视频

Distance Measurements by Taping01:18

Distance Measurements by Taping

66
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
66
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

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GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
78

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相关实验视频

Updated: Jul 20, 2025

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
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一个L形的三层和单个常见元素的Sparse传感器阵列用于2-D DOA估计.

Bo Du1,2, Weijia Cui1, Bin Ba1

  • 1Institute of Information Engineering, PLA Strategic Support Force Information Engineering University, Zhengzhou 450001, China.

Sensors (Basel, Switzerland)
|July 29, 2023
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的L形稀疏传感器阵列,用于改进到达方向 (DOA) 估计. 新设计提供了更高的自由度和增强的阵列光圈,以获得更准确的二维DOA结果.

关键词:
这是一个L形三层楼.阵列信号处理 阵列信号处理到达方向 (DOA) 估计方向传感器阵列是一系列的传感器阵列.单个常见元素稀疏数组 (LTSESA)无线通信是一种无线通信.

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相关实验视频

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科学领域:

  • 信号处理 信号处理
  • 阵列信号处理 阵列信号处理
  • 电磁学 电磁学 电磁学 电磁学

背景情况:

  • 到达方向 (DOA) 估计在各种应用中至关重要.
  • 稀疏阵列结构对于高效的DOA估计至关重要.
  • 改善稀疏数组的自由度 (DOF) 是一个关键的研究挑战.

研究的目的:

  • 提出一种新的L形稀疏传感器阵列,用于增强2D DOA估计.
  • 与现有的稀疏阵列设计相比,实现更高的自由度.
  • 为了提高青度和高度角度估计的准确性和性能.

主要方法:

  • 使用两组三级和单元稀疏数组 (TSESAs) 设计一个新的L形稀疏数组.
  • 使用一维 (1-D) 空间光谱搜索来估计向和高度角.
  • 采用TSESA数组之间的交叉共变性来实现准确的角度匹配.

主要成果:

  • 拟议的L形TSESA实现了更高的自由度 (高达4Q1Q2+8Q1-5).
  • 与传统的稀疏数组相比,显示出更大的数组光圈.
  • 实现了提高二维 (2-D) DOA估计准确度.

结论:

  • 新的L形TSESA在2D DOA估计中提供了卓越的性能.
  • 该设计为未来研究稀疏阵列信号处理提供了有前途的方向.
  • 模拟结果验证了拟议的阵列的有效性和优势.