What Is The Principle Of Operation Of Guided Wave Radar?

1.	What Is The Principle Of Operation Of Guided Wave Radar?
Answer» RADAR level measurement technology can be broken down into two different categories; Pulsed and Frequency Modulated Continuous Wave (FMCW). An advantage with Pulsed Technology is that it requires less processing power. Therefore most two-wire gauges use this technology. An advantage with FMCW is that higher accuracy can be achieved but more processing power is required and therefore FMCW-radars are typically four-wire. In Pulsed TRANSMITTERS the level measurement is a function of the time taken from the radar signal to travel to the surface and back. In FMCW gauges the transmitter constantly emits a SWEPT frequency and the distance is calculated by the difference in frequency of EMITTED and received signal.

Answer»

RADAR level measurement technology can be broken down into two different categories; Pulsed and Frequency Modulated Continuous Wave (FMCW).
An advantage with Pulsed Technology is that it requires less processing power. Therefore most two-wire gauges use this technology.
An advantage with FMCW is that higher accuracy can be achieved but more processing power is required and therefore FMCW-radars are typically four-wire.
In Pulsed TRANSMITTERS the level measurement is a function of the time taken from the radar signal to travel to the surface and back.
In FMCW gauges the transmitter constantly emits a SWEPT frequency and the distance is calculated by the difference in frequency of EMITTED and received signal.

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