In this paper we present methods to generate terrain models for mountainous regions. For these regions analytical and statistical methods are unsuitable for predicting service coverage probability, call blocking and termination probabilities. Modeled terrains are used to simulate environmental conditions in integrated mobile terrestrial and satellite communications systems. A coverage analysis ...

This paper proposes the use of congestion pricing for achieving relative service differentiation in satellite IP networks. The idea is to use congestion pricing as an effective approach to control traffic rate for Transmission Control Protocol (TCP) flows, with Explicit Congestion Notification as a congestion feedback mechanism, by taking into account network users’ willingness-to-pay. With mul...

[1] Tropical overshooting deep convection (ODC) plays an important role in affecting the heat and constituent budgets of the upper troposphere and lower stratosphere. This study investigates the properties and behaviors of such intense deep convection using a combination of CloudSat observations and geostationary satellite data. Our study approaches the subject from two unique perspectives: fir...

In this article, design and analysis of an optimal orbit control for a communication satellite is investigated. It is the challenging task and critical importance to control the orbit of a communication satellite especially the one used for worldwide communication. The main objective of this work is to evolve a design based on modelling and simulation of an optimal orbit controller for a satell...

in this paper, new features of satellite configuration, such as ip network  based infrastructure and separated signaling and media  are considered to propose a variety of satellite configurations in different orbits. because of their  different altitude in space such as low earth orbit(leo) and geostationary orbit (geo). a test bed used to test call setup delay in a one space link to process th...

Cloud absorption of solar radiation has been the focus of several recent studies and the Atmospheric Radiation Measurement Program (ARM) Enhanced Shortwave Absorption Experiment (ARESE). One of the methods for studying cloud absorption has employed the analysis of coincident surface and satellite measurements. To provide consistency with the earlier satellite results, this paper presents the re...

There is an increasing demand for interconnecting LAN's at high data rates, e.g. remote X-Applications. Due to the lack of B-ISDN before the second decade of the next century, satellite systems are the only alternative. We compare the End-to-End cell delay of a geostationary satellite system with a low earth orbit satellite system by means of simulation. The comparison shows that the use of LEO...

Along with remarkable advancement of radiocommunication services including satellite services, the radio-frequency spectrum and geostationary-satellite orbit are getting congested. WRC-15 was held in November 2015 to study and implement efficient use of those natural resources. There were a number of satellite-related agenda items associated with frequency allocation, new usages of satellite co...

Numerous studies have developed algorithms for estimating the net radiation by satellite remote sensing data obtained under clear sky conditions using polar orbiting meteorological satellite. However, estimating net radiation under cloudy sky conditions using geostationary meteorological satellites with remote sensing sensors remains a significant challenge. In this paper, we developed algorith...

The motion of properly selected clouds derived from photographs taken by the geostationary Advanced Technology Satellites provides estimates of the wind a t cloud level. A large number of lowand high-cloud motions near rawin stations are compared to the balloon-derived winds to determine the levels at which these wind estimates might be used for map analyses and to assess their accuracy a t tho...