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 3
Microwave Line-of-Sight Systems
3.1 ENGINEERING OF LINE-OF-SIGHT SYSTEMS
3.1.1 Introduction
Microwave radio systems are regarded as line of sight when the waves transmitted between the two stations do not meet any obstacle most of the time. In the engineering phase of this type of microwave radio link, it is advisable to take account of the following factors and dominant effects of propagation which have been treated in preceding chapters:
- Attenuation by diffraction due to obstacles on path which block the way under conditions of subrefraction (Kmin)
- Absorption by gases of atmosphere
- Absorption by solid particles in atmosphere
- Attenuation and depolarization by hydrometeors (e.g., rain, ice crystals)
- Fading imputable to multipath, reflection on ground, or ducting under conditions of superrefraction (dN/dh < −100 N km−1)
- Amplitude–phase distortion of signal due to selective fading and propagation differential time delay in event of multipath, reflection, or ducting conditions
- Vertical variation of launch and arrival angles of rays at antennas due to changes in vertical refractivity gradient
- Jamming by other radio links of network which share same frequency plan and polarization or by other external sources of emission
3.1.2 Establishment of Radio Link Path Profile
This ...
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.