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相关概念视频

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...
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Functional Classification of Joints01:09

Functional Classification of Joints

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Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses  or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An...
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Selected Data About Geographic Locations01:25

Selected Data About Geographic Locations

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Geographic Information Systems (GIS) rely on two core types of data: spatial data and attribute data.Spatial DataSpatial data defines the physical location of features within a coordinate system, typically expressed in terms of latitude and longitude. It provides precise positioning for elements like roads, rivers, or buildings.Attribute DataAttribute data complements spatial data by adding descriptive information about these features. For example, a road's spatial data includes its start and...
27
Structural Classification of Joints01:20

Structural Classification of Joints

3.5K
Joints, also known as articulations, are classified based on their structural characteristics, i.e., based on whether the articulating surfaces of the adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid-filled joint cavity. These differences serve to divide the joints of the body into three structural classifications.
A fibrous joint is where the adjacent bones are united by fibrous connective...
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Distance Measurements by Taping01:18

Distance Measurements by Taping

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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...
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Joints01:26

Joints

32.9K
Joints, also called articulations or articular surfaces, are points at which ligaments or other tissues connect adjacent bones. Joints permit movement and stability, and can be classified based on their structure or function.
Structural joint classifications are based on the material that makes up the joint as well as whether or not the joint contains a space between the bones. Joints are structurally classified as fibrous, cartilaginous, or synovial.
Fibrous Joints Are Immovable
The bones of a...
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相关实验视频

Updated: Jul 8, 2025

A Methodology for Capturing Joint Visual Attention Using Mobile Eye-Trackers
12:39

A Methodology for Capturing Joint Visual Attention Using Mobile Eye-Trackers

Published on: January 18, 2020

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在线联合本地化,无需用户交互.

Yanfen Le1, Jintian Ou2, Yuanhao Chen2

  • 1School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China. leyanfen@usst.edu.cn.

Scientific reports
|December 15, 2023
PubMed
概括
此摘要是机器生成的。

这项研究介绍了JointLoc,一个在线Wi-Fi指纹本地化方案. JointLoc通过利用空间信号相关性和消除无需用户直接交互的异常信号来提高室内定位的准确性.

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Last Updated: Jul 8, 2025

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科学领域:

  • 计算机科学 计算机科学
  • 电气工程 电气工程
  • 信号处理 信号处理

背景情况:

  • 无线网络指纹是一个常见的室内定位方法.
  • 接收信号强度 (RSS) 指纹识别由于复杂环境中的信号波动而面临准确性挑战.

研究的目的:

  • 为强大而准确的室内定位提出在线联合定位方案 (JointLoc).
  • 解决独立和协作本地化方法的局限性.

主要方法:

  • JointLoc利用无线信号分布的空间相关性来实现联合定位.
  • 它根据邻近的用户在没有直接互动的情况下识别邻近的用户.
  • 集成了一个基于子集的新型本地化方案,以减轻异常RSS信号.

主要成果:

  • 在现实环境中,JointLoc证明了对信号波动的稳定性.
  • 与传统和最先进的算法相比,该方案实现了良好的本地化准确性.

结论:

  • 联合洛克为准确可靠的室内Wi-Fi定位提供了一种有效的解决方案.
  • 拟议的方法通过智能地利用环境信号特征来提高定位性能.