Method for detecting a covered dielectric object

US8760175B2 · kind B2 · utility

Assignee

• Rohde & Schwarz GmbH & Co. KG · DE

Inventors

• Olaf Ostwald · Munich, DE
• Sherif Ahmed · Starnberg, DE

Key dates

• Filing date: Mar 18, 2010
• Grant date: Jun 24, 2014
• Expiry date: Nov 27, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V8/005
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a method for detecting a covered dielectric object, where a microwave signal that can be modified in frequency is generated at a particular bandwidth and transmitted in the direction of the covered dielectric object. The microwave signal reflected by the object is then obtained from the three-dimensional measurement result in a lateral, two-dimensional pattern, a highest signal amplitude and a second-highest signal amplitude within a particular time period before or after the received microwave signal is identified in a plurality of pattern points of the pattern. The object is detected if an accumulation of pattern points of the pattern is present, in which the difference in each case between the highest and the second highest signal amplitude of the received microwave signal is less than a defined threshold value.