Non-Contacting Moisture Sensing using a Dedicated UWB Time Domain Instrument
-
Henning Mextorf
,
Frank Daschner
Abstract
This paper presents a method for the moisture determination of small and irregularly shaped objects independent from their shape and orientation. The objects under test are illuminated by UWB-pulses and the scattered pulses are received by an array of antennas. A dedicated measurement set-up and time domain transmission instrument is proposed. The scattered pulses contain information about the geometric as well as the dielectric properties. In order to separate this information multivariate calibration is applied. The time domain data is therefore subjected to principal component regression, partial least squares regression and an artificial neural network. All calibration methods deliver excellent performance. The moisture content of the objects can be determined with an accuracy of prediction of 0.69% while the range of moisture is within about 5% to 24%.
©[2012] by Walter de Gruyter Berlin Boston
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- Masthead
- Editorial
- Slew-Rate and Efficiency Trade-off in Slow Envelope Tracking Power Amplifiers
- A Four-Antenna 802.11a Receiver integrated in 0.25 µm SiGe BiCMOS with Spatial Weighting
- Investigation of GaN-HEMT Based Switches for Hybrid Switching Amplifier Supply-Modulators
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- A Novel Sequential Monte Carlo Method Based Synthetic Aperture Reconstruction Approach for Real-Time 3D Wireless Local Positioning
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- Non-Contacting Moisture Sensing using a Dedicated UWB Time Domain Instrument
- Design and Test of an Imaging System for UWB Breast Cancer Detection
