Patent · US Expired

Radar level gauge

US6107957A · kind A · utility

51Cited by

23References

6Claims

0Family size

Assignees

ROSEMOUNT INC. · US
DaimlerChrysler Aerospace AG · DE

Inventors

Stefan Cramer · Lampertheim, DE
Rolf Gluth · Neu-Ulm, DE
Thomas Schake · Senden, DE
Brian E. Richter · Bloomington, US

Key dates

Filing date	Jun 26, 1998
Grant date	Aug 22, 2000
Priority date	—
Expiry date	Jun 26, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG01S7/356
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A FMCW radar tank level gauge (14) that measures a level (13) in a tank (10) by obtaining a set of phase shift data points of mixed transmitted waves and received waves. The set of spectral data phase shift values has a received target marker indicating the level. An adaptive set of masking threshold phase shift values corresponding to at least a portion of the spectral data phase shift values are calculated. The adaptive set of masking threshold values are compared with the corresponding spectral data values to identify at least one spectral data value associated with the level. The level of the tank is calculated from at least one spectral data value and the level of the tank is reported.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.