 In order to
minimize long term monthly costs it is critical to make efficient use of the
satellite capacity and power available.
A satellite receives data from one ground station, turns it around and then re-transmits it back to a second station. The satellite needs radio power on-board for this retransmission and it assigns a fraction of that power to each circuit. A problem occurs when clients have smaller dishes than their circuit calls for.
If this situation occurs you will need to ask the satellite owner to provide you with excess power, but when they agree to your request they charge a penalty, every month, so that your circuit can run clean.
You may avoid this problem by sizing the dish correctly, the Dish area is a the key factor. Doubling the dish area (approx 1.4
times larger diameter) will reduce your satellite power required by half !
The way your digital signals are transmitted and received is also
critical. Choice of the right VSAT modem is important. A wide
variety of old and new modulation methods are possible. Modern
modulation schemes and forward error correction (FEC) techniques allow
more bits/s to be squeezed out of the the available satellite capacity.
In our design we address all of these facts – giving you enough
information to make the choice that is best for your business.
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