A5037751716- Photonic and Optical Devices
- Microwave Imaging and Scattering Analysis
- Superconducting and THz Device Technology
- Terahertz technology and applications
- Advanced SAR Imaging Techniques
- Ultrasonics and Acoustic Wave Propagation
- Identification and Quantification in Food
- Microwave and Dielectric Measurement Techniques
- Antenna Design and Optimization
- Advanced Control Systems Optimization
- Sensor Technology and Measurement Systems
- Geophysical Methods and Applications
- Indoor and Outdoor Localization Technologies
- Spectroscopy and Chemometric Analyses
- Scientific Measurement and Uncertainty Evaluation
- Advanced Chemical Sensor Technologies
- Radar Systems and Signal Processing
- Potato Plant Research
Fraunhofer Institute for High Frequency Physics and Radar Techniques
2020-2023
We present a hand-guided mobile terahertz imaging platform for non-destructive testing (NDT). The scanner acquires volumetric 3D image data using an integrated FMCW radar module in combination with line scanning optics and position encoder. Consisting of galvanometer mirror aspherical telecentric f-theta lens, the optical system enables B-scans perpendicular to manual motion over width 2 cm. guiding wheel allows precise movement along cracks welds, example, enabling inspection corresponding...
The consequences of food adulteration can be far reaching. In the past, inexpensive adulterants were used to inflate different products, leading severe health issues. Contamination has many causes and physical (plant stems in tea), chemical (melamine infant formula), or biological (bacterial contamination). Employing suitable sensor systems along production process is a requirement for safety. this article, approaches inspection are illustrated, exemplary scenarios outline potential spectrum.
A sparse, ultra-wideband, multi-module 1D MIMO array at D-band (110–160 GHz) is proposed for 2D imaging of hot steel slabs during the rolling process in steelworks. In this paper, concept, hardware design, and real-time signal processing will be presented.
Abstract We report on the development of a handheld three-dimensional (3D) terahertz scanning system with an aspherical telecentric 3D-printed f-θ lens using selective laser sintering. The covers broader scan line 50 mm its larger aperture, compared to 20 range in our initial work, which was presented at European Microwave Week 2021. In order evaluate adaptability optomechanical components different sensor units, two integrated frequency-modulated continuous wave radar modules based...
A portable multisensor frequency modulated continuous radar (FMCW) networked concept is presented for the localization of persons trapped in debris building collapse scenarios. 2-D algorithm evaluated a field test to demonstrate successful detection respiration micromovements.
Radar systems have been used for over 100 years to measure distances and angular positions accurately. benefit from relatively long wavelengths, which means that most absorption scattering mechanisms do not a relevant influence on the propagation conditions of emitted electromagnetic waves. As result, radar were are primarily measurements under poor environmental conditions. Today, we usually find applications work with waves in meter millimeter wave range. Especially range, atmosphere can...
A drone detection FMCW radar operating from 57 to 64 GHz band has one transmit and two receiving fan-beam antennas. Due the close integration of system enclosure, aspects related board layout such as direct transmitter antenna receiver coupling packaging effects reduce beamwidths may efficiency. Post-integration diagnostic methods are presented test performance. The concept a combined transmit-receive radiation pattern in combination with large planar reflector is introduced used...