Results 111 to 120 of about 12,661 (218)
Design of double band Beidou navigation antenna with wide axial ratio beam
Zhongguo Jianchuan YanjiuObjectivesIn order to effectively broaden the beam width of the 3 dB axis ratio of a Beidou antenna, this paper proposes a slotted laminated microstrip patch antenna loaded with parasitic elements.
Zhuolin DENG +3 more
doaj +1 more source
Web-Based GPS Data Publishing System [PDF]
, 2014 Tato práce se zabývá vývojem webové aplikace, která umožní správu a publikaci zaznamenaných tras ve formátu GPX na mapových podkladech Mapy.cz. U každé trasy je možné zobrazit její výškový profil, přidat fotografie k daným místům a další informace ...
Hamšík, Filip
core
Medium Earth Orbits: Is There a Need for a Third Protected Region? [PDF]
The Inter-Agency Space Debris Coordination Committee (IADC) and the United Nations have adopted the concept of near-Earth regions which should be afforded protection from the accumulation of orbital debris.
Johnson, Nicholas L.
core +1 more source
Individual Global Navigation Satellite Systems in the Space Service Volume [PDF]
Besides providing position, navigation, and timing (PNT) to terrestrial users, GPS is currently used to provide for precision orbit determination, precise time synchronization, real-time spacecraft navigation, and three-axis control of Earth orbiting ...
Force, Dale A.
core +1 more source
Anomalies of land-atmospheric parameters in the 2023 Turkey earthquake (Mw7.8) using GNSS and ERA5
Geomatics, Natural Hazards & RiskThe Turkey earthquake (Mw 7.8) caused severe damage to Turkey and Syria on Feb. 6, 2023. It was observed that anomalies of land surface and atmospheric multi-parameters were associated with the land–atmosphere–ionosphere coupling (LAIC) mechanism.
Li Li +7 more
doaj +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
Mass-Market Receiver for Static Positioning: Tests and Statistical Analyses [PDF]
, 2011 Nowadays, there are several low cost GPS receivers able to provide both pseudorange and carrier phase measurements in the L1band, that allow to have good realtime performances in outdoor condition.
Cina, Alberto, Marucco, G., Piras, Marco
core
Navigation Performance of Global Navigation Satellite Systems in the Space Service Volume [PDF]
This paper extends the results I reported at this year's ION International Technical Meeting on multi-constellation GNSS coverage by showing how the use of multi-constellation GNSS improves Geometric Dilution of Precision (GDOP).
Force, Dale A.
core +1 more source
Evaluation of the Ionospheric Corrections Generated by Smartphones with Different Real-Time Products. [PDF]
Sensors (Basel)Zhang Y, Jiang Y, Gao Y.
europepmc +1 more source