Results 101 to 110 of about 51,700 (277)
Engineering Reports, Volume 7, Issue 7, July 2025.Some stations have slightly larger errors in mid low latitude regions, while others have slightly smaller errors in high latitude regions. By comparing the B1C/B2a and B2b/B3I IFC SPP results of all 84 stations, it was found that the RMSE of all stations with B2b/B3I IFC was greater than that of B1C/B2a. ABSTRACT This article analyzes the BDS Phase III
Xingli Sun, Jinjie Yao
wiley +1 more source
Passive detection of moving aerial target based on multiple collaborative GPS satellites [PDF]
, 2020 Passive localization is an important part of intelligent surveillance in security and emergency applications. Nowadays, Global Navigation Satellite Systems (GNSSs) have been widely deployed. As a result, the satellite signal receiver may receive multiple
Chen, Yunfei +5 more
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Mapping the Ionosphere Over East Asia Based on Ground‐Based GNSS TEC Data in 2010–2023
Space Weather, Volume 23, Issue 7, July 2025.Abstract Using total electron content (TEC) data from multiple ground‐based Global Navigation Satellite System (GNSS) receiver networks from 2010 to 2023, we reconstructed ionospheric TEC maps for East Asia. The maps cover longitudes from 70°E to 150°E and latitudes from 20°S to 60°N. The time resolution of reconstructed TEC map was 15 min.
Yuqing Wang +9 more
wiley +1 more source
Improving performance of pedestrian positioning by using vehicular communication signals [PDF]
, 2018 Pedestrian-to-vehicle communications, where pedestrian devices transmit their position information to nearby vehicles to indicate their presence, help to reduce pedestrian accidents. Satellite-based systems are widely used for pedestrian positioning, but
Sadao Obana, Suhua Tang
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Journal of Geophysical Research: Atmospheres, Volume 130, Issue 11, 16 June 2025.Abstract We develop a new monthly zonal mean climatology (MMC) in the upper troposphere and lower stratosphere from September 2006 to July 2023 using the dry temperature profiles from multiple global navigation satellite system (GNSS) radio occultation (RO) missions processed by the GNSS RO Science and Data Center (SDC) at the NOAA Center for Satellite
Jun Zhou +7 more
wiley +1 more source
Desain dan Pengembangan Sistem Kecerdasan Robotika Muatan Roket dengan 5 Derajat Kebebasan dengan Kontrol Sistem Pendaratan Navigasi X-Y Kartesian [PDF]
, 2010 In this study a design and manufacture a rocket payload system that has the ability to fly autonomously intelligently is discussed. The rocket payload system was designed to be able to return to the landing position.
Arhta, Zulfikar +2 more
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Investigation into the effect of atmospheric particulate matter (PM2.5 and PM10) concentrations on GPS signals [PDF]
, 2017 The Global Positioning System (GPS) has been widely used in navigation, surveying, geophysical and geodynamic studies, machine guidance, etc. High-precision GPS applications such as geodetic surveying need millimeter and centimeter level accuracy.
Born +8 more
core +3 more sources
Geophysical Research Letters, Volume 52, Issue 10, 28 May 2025.Abstract Prior observational uncertainties have hindered the clear understanding of the link between tropospheric Lamb waves and ionospheric disturbances. In this study, we precisely extracted ionospheric Lamb waves originating from the epicenter of the 15 January 2022 Tonga eruption, propagating upward in a conical structure.
Ruoxi Li +9 more
wiley +1 more source
Advanced Science, Volume 12, Issue 17, May 8, 2025.A chloroplast‐like CSS@BP composite with superior photothermoelectric conversion performance is synthesized via sonochemical methods. A portable Attitude Recognition Box (ARB) incorporating a CSS@BP/Bi2Te3 photothermal conversion array is developed, which achieves precise attitude recognition through bidirectional current detection induced by ...
Liangshutong Zhang +5 more
wiley +1 more source
Based on baseband chip developed navigation interface card [PDF]
, 2016 北斗卫星导航系统是我国自主的卫星导航系统，可为分布在我国及周边地区的用户提供定位、短报文通信及授时服务。本文通过对国外GPS导航系统的分析，结合当前国内北斗用户发展现状及军事需求分析，提出相关战术技术指标，完成方案研制。 本文所定义的导航板卡是将天线的信号进行分路后分别进入射频部分进行处理，然后将下变频后的RNSSB3/B1、GPS的L1频点和Glonass的F1频点的中频导航信号送入基带单元进行处理，以完成对卫星导航信号的捕获、跟踪、PVT解算和授时等，该方案是基于北斗区域信号和卫星导航产品规模化 ...
邵留伟
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