نتایج جستجو برای: cannot be removed via dual frequency receiver observations
تعداد نتایج: 5245050 فیلتر نتایج به سال:
A Review of The Free-Market Family: How the Market Crushed American Dream (and It Can Be Restored). by Maxine Eichner.
Abstract The availability of orbit information with high precision and low latency is a key requirement for many Earth-observation missions, predominantly in the field radio occultation. Traditionally, precise determination solutions low-Earth (LEO) satellites are obtained offline on ground after downloading GNSS measurements auxiliary spacecraft data to processing center. this depends...
The use of frequency-domain interleaving on a frame-byframe basis for orthogonal frequency division multiplexing (OFDM) combined with time division multiplexing (OFDM/TDM) is presented. In conventional OFDM, FDE is not designed to exploit the channel frequencyselectivity and consequently, the frequency diversity gain cannot be obtained. To further improve the bit error rate (BER) performance of...
This paper examines the effectiveness of two proposed methods for dual-frequency smoothing in Ground Based Augmentation Systems (GBAS) based on data collected in 2010 by clusters of nearby receivers whose measurements are publically available. After an extensive search turned up no ionospheric anomalies, data from several clusters of CORS and IGS stations under nominal conditions was examined, ...
AO 0235+164 is a very compact, flat spectrum radio source identified as a BL Lac object at a redshift of z = 0.94. It is one of the most violently variable extragalactic objects at both optical and radio wavelengths. The radio structure of the source revealed by various ground-based VLBI observations is dominated by a nearly unresolved compact component at almost all available frequencies. Dual...
Abstract SPT-3G is the third survey receiver operating on South Pole Telescope dedicated to high-resolution observations of cosmic microwave background (CMB). Sensitive measurements temperature and polarization anisotropies CMB provide a powerful data set for constraining cosmology. Additionally, surveys with arcminute-scale resolution are capable detecting galaxy clusters, millimeter-wave brig...
آموزش واژه با بهره گیری از یادگیری تلفیقی و نرم افزارهای چند رسانه ای در کلاس های آموزش زبان انگلیسی
the purpose of this study was to investigate the impact of blended learning and multimedia softwares on iranian efl students vocabulary learning. in addition, the present study tried to examine the extent to which multimedia softwares can be applied into efl classes in iran. it also attempted to find out students attitudes toward using these softwares. to this end, 87 iranian efl learners at el...
Following the success of the Tropical Rainfall Measuring Mission (TRMM), considerable effort has been directed at the next generation of space-based precipitation radar (PR) to be launched aboard the Global Precipitation Measuring (GPM) core satellite. The GPM mission concept is centered on the deployment of a core observatory satellite with an active dual-frequency precipitation radar (DPR), o...
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