نتایج جستجو برای: combination of gps heights with orthometric heights
تعداد نتایج: 22174852 فیلتر نتایج به سال:
The use of high-precision technology the global navigation satellite system (GNSS) has put forward task developing methods for creation and a new national open coordinate in Republic Uzbekistan. In country, up to now CS42 system, based on Krasovsky ellipsoid used geodetic works. Baltic normal heights (1977), tied mean sea level with zero mark Kronstadt tide gauge, was adopted as height datum. D...
block heights and capillary continuity between matrix blocks play paramount role in the sensitivity analysis and therefore the history matching of cumulative oil production and production rate of carbonated fractured reservoirs. in this study, the influence of these parameters upon cumulative production and recovery factor of an iranian fractured reservoir were studied by the usage of a simulat...
[1] Beside the GPS radio occultation measurements of the troposphere and ionosphere, the CHAMP satellite tracks presently up to 8 GPS satellites simultaneously for navigation. The received dual frequency GPS signals provide valuable information on the ionization state of the topside ionosphere and plasmasphere. This paper briefly describes a new developed model assisted technique to improve the...
Investigating the Amount of Forces Caused by Solitary Waves on Coastal Walls Using OpenFOAM Software
Coastal walls (dyke) are one of the methods of protecting the coast against coastal erosion and destructive forces of waves. The purpose of this study is to simulate the wave collision with the coastal dyke and compare the results with the laboratory model. Open FOAM open source software and K-ω SST turbulence model were used to simulate the amount of wave consumed by the coastal dyke. Taking i...
in this paper, the correlation between total ozone and upper air meteorological parameters such as heights of geopotential surfaces and temperatures for three stations of tehran, ankara and bet dagan located in the middle east, in cold period (jan, feb and march) of years of 2005, 2007 and 2008 has been investigated. data for upper air is taken from wyoming university and ozone data is from sat...
Multipath in Global Positioning System (GPS) is the interference of the microwave signals directly from satellites and those reflected before reaching the antenna, typically by the ground. Because reflected signals cause positioning errors, GPS antennas are designed to reduce such interference. Recent studies show that multipath could be utilized to infer the properties of the ground around the...
This article describes an investigation using automatic generation of heights over a typical Danish landscape. For this investigation the program Match-T has been used. The investigation is carried out over a test area of 3.5 x 4.0 km. The area represents more than 80 % of what could usually be termed typical Danish landscape. The test area is divided into five different landscape types. Over t...
A methodology to generate spatially continuous fields of tree heights with an optimized Allometric Scaling and Resource Limitations (ASRL) model is reported in this first of a multi-part series of articles. Model optimization is performed with the Geoscience Laser Altimeter System (GLAS) waveform data. This methodology is demonstrated by mapping tree heights over forested lands in the continent...
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