· Telemetry: Telemetry is an automated communications process by which measurements and other data are collected at source and transmitted to receiving equipment for monitoring. Modulation Techniques: 1) Amplitude Modulation: the amplitude of the carrier signal is modulated according to the source signal while keeping the frequency constant. 2) Frequency Modulation: the frequency of the carrier signal is modulated according to the source signal while keeping the amplitude constant. 3) Pulse width Modulation: the pulse width of the carrier signal is modulated according to the source signal while keeping the amplitude & frequency constant. ...
