نتایج جستجو برای: cannot be removed via dual frequency receiver observations

تعداد نتایج: 5245050  

Journal: :ISPRS Int. J. Geo-Information 2017
Shengli Wang Jian Deng Xiushan Lu Ziyuan Song Ying Xu

Fast and reliable ambiguity resolution (AR) has been a continuing challenge for real-time precise positioning based on dual-frequency Global Navigation Satellite Systems (GNSS) carrier phase observation. New GNSS systems (i.e., GPS modernization, BDS (BeiDou Navigation Satellite System), GLONASS (Global Navigation Satellite System), and Galileo) will provide multiple-frequency signals. The GNSS...

2008
X. Zhang R H. Comfort D. L. Gallagher J. L. Green Z. E. Musielak T. E. Moore

We present a ray-tracing study of the propagation of PC 3 Alfven mode waves originating at the dayside magnetopause. This study reveals interesting features of a magnetospheric filter effect for these waves. PC 3 Alfven mode waves cannot penetrate to low Earth altitudes unless the wave frequency is below approximately 30 mHz. Configurations of the dispersion curves and the refractive index show...

Journal: :Deutsches Aerzteblatt Online 2011

Journal: :Journal of Computer and System Sciences 1986

Journal: :Nordic Studies on Alcohol and Drugs 2020

Journal: :Algebraic & Geometric Topology 2014

Journal: :British Dental Journal 2015

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