Tell me what a guided wave radar is, pls. :)
(I did synthetic aperture radar in university, then ground penetrating radar...)
We use them to measure level. They shoot microwave energy pulses down a probe and a very precise clock is used to determine how long it takes to receive echoes back from the interface we are trying to measure. The echoes are created whenever a pulse encounters an interface with a change in dielectric properties (e.g., air/water interface). The longer it takes to receive the echo after a pulse is sent, the farther the interface is from the instrument.
So, basically it's a ground penetrating radar (same physics). I wonder why the change in nomenclature...
Because we're not using it to penetrate ground, rather we're using it to measure level in chemical process equipment.
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