CHAPTER 1
INTRODUCTION

Communication links between space crafts is an important element of space infrastructure, particularly where such links allow a major reduction in the number of earth stations needed to service the system. An example of an inter orbit page link for relaying data from LEO space craft to ground is shown in the figure below



Interorbit page link for relating data from LEO spacecraft to ground

Fig. 1
Inter orbit page link for relaying data from LEO space craft to ground.


The above figure represents a ....etc

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ABSTRACT
Satellite crosslinks generally require narrower bandwidths for
increased power concentration. We can increase the power concentration
by increasing the cross page link frequency with the same size antenna. But
the source technology and the modulation hardware required at these
higher frequency bands are still in the development stage. Use of
optical frequencies will help to overcome this problem with the
availability of feasible light sources and the existence of ....etc

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ABSTRACT
A satellite is any object that orbits another object. In popular usage, the term 'satellite' normally refers to an artificial satellite.
A planet, or any other body, which finds itself at any distance from the sun with no sideways velocity will quickly fall without missing the sun. Only our sideways motion saves us. The planet, which is at a larger distance, requires longer falling to where it would strike the sun. As a result, it takes a lon ....etc

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Mobile Satellite Communication

Mobile Satellite system
Constellation Characteristics and Orbital parameters
Radio Link Design
Communicators
System Architecture


Satellite Location w.r.t. Orbital Plane System
Satellite Constellation
For constellation design
High elevation angle.
Low propagation delay.
Low battery consumption.
Inter- and intra- orbital interference in the proper
limit.
The no. of satellite being visible at any time within
a coverage area.


Network Proce ....etc

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Abstract
LEO is Low Earth Orbit satellite.It circulates on a lower orbit in a shorter period . Additionally LEO systems try to ensure a high elevation for every spot of the earth to provide a highquality communication page link . The networks will play an important role in the evolving information infrastructure . It provides communication with shorter endto- end delays and e_ciency frequency usages . Some problems need to be solved before LEO satellite system can be successfully deployed . One of these problems is handover management . Even ....etc

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Seminar report on Satellite communication pdf
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