July 2008
Intermediate to advanced
430 pages
9h 51m
English
Content preview from Microwave Engineering: Land & Space Radiocommunications
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
CHAPTER 5
Satellite Communications
5.1 SPACE GEOMETRY OF SATELLITE SYSTEM
5.1.1 Introduction
This chapter provides useful indications for determination of satellite orbits, such as the period of revolution, the distance with respect to the center of Earth or to an Earth station, and the travel speed of the satellite on its orbit. It is devoted, essentially, to the systems of telecommunication using a geostationary satellite, but the principles remain valid for the systems comprising a moving satellite.
5.1.2 General Characteristics of Orbits
Calculation of a satellite orbit rests, on the one hand, on Kepler's laws and, on the other hand, on universal gravitation, Newton's law. Figure 5.1 presents the relative positions of Earth and the satellite in its orbit with the following notations:
| r | Distance between centers of gravity of Earth and satellite |
| a | Half large axis of ellipse |
| c | Distance between center of Earth and that of ellipse |
| M | Mass of Earth |
| m | Mass of satellite |
| α | Angular distance of satellite relative to perigee |
5.1.2.1 Kepler's Laws
- The trajectory of a planet in space, called its orbit, is an ellipse described in a plane which contains the center of the sun placed at one of the focus (1602).
- The vector which connects the sun to the planet sweeps equal surfaces ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.