IMPROVED THRESHOLD SETTING FOR A RADAR LEVEL TRANSMITTER

摘要

Disclosed is a method and apparatus for setting threshold values (TF, T1, T2) for use by a radar level transmitter (10) to detect reflected wave pulse (44, 46, 48) corresponding to portions of a transmitted microwave pulse which reflect from interfaces (18, 20, 40) contained in a container (12). The present invention estimates these threshold values based upon various parameters. Some of these parameters can relate to properties of the materials forming the interfaces while others relate to properties of the antenna (22) and user-defined parameters.