在不同速度运行的时空参数的测量:GPS单元和红外之间的比较
Thomas Provot1,2, Benjamin Millot3,4, Eline Hazotte1,2
1EPF-Engineering School, 55 Avenue du Président Wilson, 94230 Cachan, France.
Methods and protocols
|December 27, 2024
概括
一个新的全球定位系统 (GPS) 与惯性测量单元 (IMU) 集成,准确地测量运行时空参数,如步骤频率和长度. 这项技术为教练提供了一个实用,精确的工具,以提高训练和比赛中的运动表现.
科学领域:
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
- 绩效分析 绩效分析
背景情况:
- 精确测量时空参数 (步骤长度,频率) 对于运行和冲刺性能分析至关重要.
- 传统的方法 (视频,力量平台) 耗时或有限,需要先进的技术.
- 全球定位系统 (GPS) 和惯性测量单元 (IMU) 的集成为有效的数据捕获提供了潜力.
研究的目的:
- 评估商业GPS-IMU系统在冲刺期间测量时空参数的有效性.
- 为了比较GPS-IMU系统与黄金标准光学系统的准确性.
- 为了评估系统在不同冲刺速度的性能.
主要方法:
- 五名经验丰富的男子跑步者以缓慢,中等和快速的速度进行了40米冲刺.
- 一个商业GPS-IMU单元与光学参考系统一起被佩戴.
- 从398个步骤中提取了时空参数 (步骤频率,长度,速度) 来进行分析.
主要成果:
- 该GPS-IMU系统显示与参考系统的步骤频率 (r2 = 0.92) 和步骤长度 (r2 = 0.91) 达成非常高的一致.
- 对于步骤速度 (r2 = 0.99) 发现了很好的一致性,所有参数的根平均平方误差 (RMSE) 值都很低.
- 该系统在捕获时空数据时表现出高精度和较低的相对误差.
结论:
- GPS-IMU系统在不同速度的冲刺中准确地测量关键的时空参数.
- 这些系统为培训和竞争中的绩效分析提供了有价值的,全面的数据.
- 在GPS-IMU技术的进一步改进可以提高准确性和扩大在精英体育的应用.
相关概念视频
01:30Types of Global Positioning System Surveys
36
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...
36
01:28Field Application of Global Positioning System
19
The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
19
01:30Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device
14
Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point...
14
01:26Errors in Global Positioning System
22
Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
22
01:30Introduction to Global Positioning System
36
The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...
36
01:30Electronic Distance Measuring Instruments
13
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short...
13