What are the losses in satellite communication?
The difference between the power sent at one end and received at the receiving station is known as Transmission losses. The losses can be categorized into 2 types. The losses which are constant such as feeder losses are known as constant losses.
What is loss in transmission in communication?
Transmission loss (TL) in general describes the accumulated decrease in intensity of a waveform energy as a wave propagates outwards from a source, or as it propagates through a certain area or through a certain type of structure.
Which are the types of the atmospheric losses?
They can assume two different types: Atmospheric attenuation; • Atmospheric absorption. The major distinguishing factor between them is their origin. Attenuation is weather- related, while absorption comes in clear-sky conditions.
What are the main reasons for path losses?
Path loss normally includes propagation losses caused by the natural expansion of the radio wave front in free space (which usually takes the shape of an ever-increasing sphere), absorption losses (sometimes called penetration losses), when the signal passes through media not transparent to electromagnetic waves.
What is free space loss in satellite communication?
In telecommunication, the free-space path loss (FSPL) is the attenuation of radio energy between the feedpoints of two antennas that results from the combination of the receiving antenna’s capture area plus the obstacle-free, line-of-sight path through free space (usually air).
What is antenna losses?
Losses for single antennas can be minimized using high conductivity materials. It is less well understood that loss for array antennas is also influenced by mutual coupling between array elements and the beamformer weights applied to the signal from each element.
What is meant by insertion loss?
Insertion loss is the amount of energy that a signal loses as it travels along a cable link. It is a natural phenomenon that occurs for any type of transmission—whether it’s electricity or data.
What is distribution losses?
Distribution losses, defined as the difference between the electricity entering the distribution network and that leaving it, arise for technical and other reasons.
What is diffraction loss?
The diffraction loss is defined as the attenuation by diffraction when a line-of-sight path is obstructed by clutter.
What is path loss exponent?
The path loss exponent (PLE) is a parameter indicating the rate at which the received signal strength (RSS) decreases with distance, and its value depends on the specific propagation environment.
What is free space loss describe how it occurs?
Free space loss: The free space loss occurs as the signal travels through space without any other effects attenuating the signal it will still diminish as it spreads out. This can be thought of as the radio communications signal spreading out as an ever increasing sphere.
What is a satellite communications system?
A satellite communications (satcom) system maybe looked at as comprising of three parts “space segment”, the “ground segment” and the transmission medium ( the space between the Earth and the satellite) The Space Segment1/6 • A telecommunications satellite comprises:
Why are satellite communications complementary to Cable Communications?
Satellites are complementary to cable for the following reasons: • Submarine cables (and landline fibre) are subject to cuts • Interim solutions for cellular backhaul and internet trunking • Satellite systems utilizing MEO (medium Earth orbit) have both high capacity and high quality (low latency) and cost. Birth of satellite communications 10/11
What are the applications of satellite?
Birth of satellite communications 1/11 Communications satellites may be used for many applications: • relaying telephone calls • providing communications to remote areas of the Earth, • TV direct-to-user broadcasting • providing communications to ships, aircraft and other mobile vehicles • etc . Network Services Media Services Government Services
What is a satellite link budget analysis?
• A satellite link budget analysis will determine what modcod can be used and what are the required bandwidth and power. Introduction to Satellite Link Analysis 8/9 What is a good efficiency?