Satellite Uplink And Downlink Design

Universal engineering college thrissur 680123 department of ece ec09 l05.

Satellite uplink and downlink design.

Take a look at the drawing below and note the path of devices on the left hand. These calculations basically relate two quantities the transmit power and the receive power and show in detail how the difference between these two powers is accounted for. Uplink downlink intersatellite links relay satellite relay satellite relay satellite sensor satellite sensor satellite crossover or intersatellite links mission data launch phase tt c tt c satellite ground station tt c tracking telemetry and control the communications architecture consists of satellites and ground stations interconnected with. The term uplink chain is used to refer to the series of pieces of equipment that are used to produce a radio frequency signal for sending out data.

It receives uplink signal from the satellite antenna and transmits downlink signal to the satellite antenna. The description provided here is imprecise as the exact configuration can vary widely. Satellite uplink and downlink analysis and design. When an uplink is being received by the spacecraft at the same time a downlink is being received by earth the communication is called two way.

The downlink chain is built using nearly the same equipment in reverse order. Satellite communication module 3 satellite link design 02 11 14 2 3. Design of the satellite link 1. This chapter describes how the link power budget calculations are made.

W e set up the satellite based infrastructure which allows smooth always on connectivity. We design build commission and maintain satellite uplink downlink systems on a turnkey basis. Satellite downlink in this process satellite sends the signal and the earth station receives it. Low noise amplifier lna amplifies the weak received signal.

The communication going from a satellite to ground is called downlink and when it is going from ground to a satellite it is called uplink. We enable the power of the internet. Carrier processor performs the frequency down conversion of received signal uplink. The cost of transmitters tend to be high compared with the cost of receiving.

Communication satellites bring the world to you anywhere and any time. The equation is same as the satellite uplink with a difference that we use the abbreviation d everywhere instead of u to denote the downlink phenomena. The uplink design is easier than the downlink since an accurately specified carrier power must be presented at the satellite transponder and it is often feasible to use much higher power transmitters at earth stations than can be used on a satellite.