satellite link budget c band for 4 mbps video
I need this bandwidth because i take real time EO/IR payload (video data), SAR(syntetic aperture radar data, noise camera data and telemetry from airborn
maybe i can't achieve this rate but i need high data rates.
i will use 200MHz bandwith because i also code my data with spread spectrum or another techniques so i need more bandtwidth.My link will be full dublex. Uplink 200Kbps(more important because i don't wanna lose my airborne with a data link error) Downlink 10.71 and 45Mbps.
My airborne is big enough to carry theese amplifiers and transmitters it will weight >3000kg Also i will have SATCOM in my airborne i need 2Mbps data rate for my SATCOM link. The problem is to mount the SATCOM airborne Antenna to my Airborne.
Also i will use a tracking directional antenna with a diameter aproximatelly 1.2meter with ~34db gain.
I think i don't have fresnel zone problem with my data link(what do you think?)
Added after 2 minutes:
Also i wanna talk about another transmitter receiver system at 436MHz with a distance 30 km What data rate i can achieve and What problems will i have with this link.
are the structures of transmitters with these frequencies(436MHz) and Ku band frequencies same
i mean Topologies and the circuits PLL,VCO and TCXO combination for LO for example.
Added after 30 minutes:
KTBRF(log) = 10 log(1.381 10-23 W/Hz/K * 290K 200MHz * 1000mW/W)
=-90dB
yes you are right i forget 1000mW
Added after 8 minutes:
-174+6 (noise figure) +10log(2e8)=-87 dbm
i think noise figure is not included with KTB
example: