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1. (WO2001002818) METHOD AND DEVICE FOR LIQUID LEVEL MEASUREMENT BY MEANS OF RADAR RADIATION

Pub. No.:    WO/2001/002818    International Application No.:    PCT/SE2000/001291
Publication Date: Fri Jan 12 00:59:59 CET 2001 International Filing Date: Tue Jun 20 01:59:59 CEST 2000
IPC: G01F 23/284
G01S 7/35
G01S 13/08
G01S 13/88
Applicants: SAAB MARINE ELECTRONICS AB
Inventors: KLEMAN, Mikael
Title: METHOD AND DEVICE FOR LIQUID LEVEL MEASUREMENT BY MEANS OF RADAR RADIATION
Abstract:
The invention relates to a method and a device for measuring a level in a receptacle using radar. Via an aerial (1) directed down into the receptacle, an electromagnetic wave is transmitted and a reflected and time-delayed wave is received, the level being calculated from the time delay. Via one and the same aerial (1) at least two waves are transmitted and received, which are mutually distinguishable by a detectable characteristic for each wave. The device according to the invention is characterized in that connected to the aerial (1) is at least one further radar measuring channel (3; 4), the radar waves of which are mutually distinguishable and distinguishable from the radar wave used in a first radar measuring channel.