There is a trend for mobile satellite system architectures aimed at the deployment of multi-satellite constellations in Non-Geostationary Earth Orbits (NGEOs). This allows the user terminals to be small size, low cost and having low power demand. In present and next generation satellite systems, CDMA has been proposed as the multiple access technique for a number of mobile satellite communicati...

With the increasing number of user terminals (UTs), interference among UTs might significantly decrease throughput low earth orbit satellite communication system. In this paper, scheduling method is investigated to suppress interference. Specifically, leveraging strong spatial directivity channels, a low-complexity angle-based orthogonal selection (AOUS) algorithm proposed, which selects with n...

The proliferation of low-earth orbit (LEO) satellites and the LEO satellite internet will be a game-changer for low-latency high-speed global internet. While this new generation in conjunction with fifth network (5G) sixth (6G) enabled emerging technologies, such as precision farming smart cities, it bring challenges, collision, limited lifespan, security concerns, brightness. This article disc...

In recent decades, the rapid development of alternative methods for launching satellites into space has been observed. The main purpose this work is to obtain reliable information about aerodynamic properties, which will be useful in preliminary design a low-cost satellite launch system based on consisting carrier aircraft and rocket orbiter. numerical geometry was developed as result digitizat...

9  Abstract— In this paper, we present a hybrid fractal image compression method for satellite images. The proposed algorithm uses entropy and arithmetic coding. The satellite image is decomposed into low frequency sub-band and high frequency sub-band. The low frequency sub-band uses fractal coding, thus making the low-frequency information loss less which is sensitive to human visual system. ...