作者: Ronald Van Der Pol
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摘要: A process for measuring the level of a liquid in tank according to radar principle, which microwave energy is transmitted direction and bottom from an antenna located above level, signal reflected received by antenna, may be determined transit time signal, other signals than signals, i.e., spurious particular on usually relatively strong, being filtered out or otherwise taken into account technique, actual distance between (the distance), known, permittivity permeability numbers at least approximately leads reliable results way simpler with respect analysis technique because fact that apparent this time, ratio known distance, therefore determined.