修改的RTK-GNSS用于具有挑战性的环境
Ellarizza Fredeluces1, Tomohiro Ozeki1, Nobuaki Kubo1
1Department of Marine Systems Engineering, Tokyo University of Marine Science and Technology, Tokyo 135-8533, Japan.
Sensors (Basel, Switzerland)
|May 11, 2024
概括
实时动态全球导航卫星系统 (RTK-GNSS) 提供厘米级准确度,但在城市地区难以实现. 这项研究提高了RTK-GNSS的可靠性,使用多余的卫星来提高定位精度和在具有挑战性的环境中固定速度.
科学领域:
- 地理学工程 工程地质学
- 卫星导航系统 卫星导航系统
- 地理空间定位是指地理空间定位.
背景情况:
- 实时动态全球导航卫星系统 (RTK-GNSS) 是精确定位的领先技术.
- 在城市环境中,由于多路径干扰和信号阻塞,RTK-GNSS的性能下降.
- 导航行业的用户面临着巨大的挑战,目前的RTK-GNSS在建成地区的稳定性.
研究的目的:
- 提高RTK-GNSS解决方案在具有挑战性的城市环境中的可用性和可靠性.
- 开发和评估用于提高RTK-GNSS性能的新方法.
- 在信号退化地区解决传统RTK-GNSS的局限性.
主要方法:
- 集成传统的RTK-GNSS技术与使用剩余卫星的新方法.
- 开发一种技术,利用未使用的卫星数据来检测不正确的定位解决方案.
- 在东京地区密集的城市地区进行实地测试.
主要成果:
- 与商业接收器和开源程序相比,提出的方法显示出更高的固定率.
- 定位可靠性得到了显著的改善,达到与商业技术相比或超过的水平.
- 这些方法有效地减轻了多路径效应和有限的信号可用性问题.
结论:
- 新的RTK-GNSS增强策略显著提高了在城市环境中的定位精度和可靠性.
- 利用剩余的卫星为克服GNSS信号挑战提供了一个强大的解决方案.
- 这项研究为复杂环境中的导航应用提供了宝贵的进步.
相关概念视频
01:30Types of Global Positioning System Surveys
55
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...
55
01:28Field Application of Global Positioning System
43
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...
43
01:26Errors in Global Positioning System
44
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,...
44
01:30Introduction to Global Positioning System
56
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,...
56
01:30Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device
27
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...
27
01:25Methods of Obtaining Topography
63
Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...
63