What is satellite switched time division multiple access?

Answer 1

Time division multiple access (TDMA) is a modulation scheme used to impress a digital signal onto a carrier and allow it to be effectively demodulated on the receiving end. Whether it's a cell phone, satellite or whatever, some kind of "agreement" must be worked out in advance to allow devices to connect. TDMA is one kind of way to modulate the signals.

Think of AM and FM radio. One cannot receive the other, and agreement must be made in advance between the transmitter and receiver(s) as to how the information being passed on is going to be put onto the carrier signal. And, as stated, TDMA is one way this modulation if "formulated" so information can be put on a carrier and taken off at a user's end.