Results 91 to 100 of about 8,142 (251)
Effect of the 1 December 2023 Geomagnetic Storm on SPP Performance in China
Space Weather, Volume 23, Issue 9, September 2025.Abstract Geomagnetic storms, precipitated by solar phenomena such as coronal mass ejections (CMEs), profoundly disturb the Earth's magnetic field, impacting satellite‐based navigation systems. This study analyzed the effect of a moderate geomagnetic storm on 1 December 2023, on single‐point positioning (SPP) accuracy across various Chinese regions ...
Si Chen +6 more
wiley +1 more source
BeiDou Navigation Satellite System III Application in The Power Industry [PDF]
, 2021 Zhiqiang Wang +3 more
openalex +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
core
Space Weather, Volume 23, Issue 9, September 2025.Abstract Large‐scale traveling ionospheric disturbances (LSTIDs) are wave‐like structures propagating through the ionosphere from auroral to lower latitudes, affecting radar‐based technologies and satellite navigation. Due to their disruptive effects, timely detection is crucial. This work presents an autonomous detection technique based on travel‐time
Marco Guerra +8 more
wiley +1 more source
Water Resources Research, Volume 61, Issue 9, September 2025.Abstract Hydrogeodesy is the discipline that measures the Earth's solid and aquatic surfaces and gravity field from space to study water resources and their changes over time. The Special Collections on Hydrogeodesy: Understanding Changes in Water Resources Using Space Geodetic Observations, in Water Resources Research (WRR) and Geophysical Research ...
Fernando Jaramillo +5 more
wiley +1 more source
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
THE DEVELOPMENT OF NAVIGATION SYSTEMS IN CIVIL AVIATION
Научный вестник МГТУ ГА, 2017 The article describes the history of navigation systems formation, such as "Cicada" system, which at that time could compete with the US "Transit", European, Chinese Beidou navigation system and the Japanese Quasi-Zenit.The detailed information about ...
A. S. Stepanenko
doaj
Koneohjaus ja laserkeilausaineiston tuottaminen mallintamiseen [PDF]
, 2018 Työn tavoitteena oli perehtyä koneohjauksen perusteisiin, paikannusmenetelmiin sekä ohjeistuksiin ja vaatimuksiin. Tavoitteena oli myös tarkastella, millä menetelmillä tuotettua laserkeilausaineistoa voidaan hyödyntää koneohjauksessa käytettävän ...
Toivanen, Tuomo
core
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
core +2 more sources
Journal of Geophysical Research: Space Physics, Volume 130, Issue 8, August 2025.Abstract The occurrence rate of daytime electron density irregularities in the low‐latitude F region around the solar minimum exhibits different seasonal patterns in the Northern Asian sector (near 110°E longitude), depending on the data set used. This study examines this discrepancy using Beidou total electron content (TEC) data and vertical TEC ...
Hoang Nguyen +3 more
wiley +1 more source