Helmut Essen
Fraunhofer Society
93 Papers
601 Citations
Helmut Essen is an academic researcher from Fraunhofer Society. The author has contributed to research in topics: Radar & Synthetic aperture radar. The author has an hindex of 17, co-authored 93 publications. Previous affiliations of Helmut Essen include German Aerospace Center.
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Papers
Focus FMCW SAR Data Using the Wavenumber Domain Algorithm
TL;DR: A signal model is proposed to address the effects of the continuous motion during the transmit time on the echoed signal and the application of the wavenumber domain algorithm for the FMCW SAR data is discussed.
159
Early Forest Fire Detection and Verification using Optical Smoke, Gas and Microwave Sensors
TL;DR: The International Forest Fire Fighting (iWBB) project as discussed by the authors developed an integrated approach for early forest fire detection and suppression based on an adequate combination of different detection systems depending on wildfire risk, the size of the area and human presence affiliated with an adequate logistical infrastructure.
84
High range resolution by means of synthetic bandwidth generated by frequency-stepped chirps
TL;DR: A method is presented to achieve large bandwidths with a synthetic chirp waveform adequate for short transmit pulses, which are typical for all millimetre-wave-radar applications using solid state transmitter stages due to ‘spatial concatenation’.
74
MEMPHIS-a fully polarimetric experimental radar
Hartmut Schimpf,Helmut Essen,S. Boehmsdorff,Thorsten Brehm +3 more
- 24 Jun 2002
TL;DR: The MEMPHIS polarimetric SAR is able to operate simultaneously at X-, Kaand W-band and in forward squinted Doppler beam sharpenung (DBS) mode and with across-track interferometry.
Metamorphic HEMT MMICs and Modules for Use in a High-Bandwidth 210 GHz Radar
Axel Tessmann,Ingmar Kallfass,Arnulf Leuther,Hermann Massler,M. Kuri,M. Riessle,M. Zink,Rainer Sommer,Alfred Wahlen,Helmut Essen,Volker Hurm,Michael Schlechtweg,Oliver Ambacher +12 more
- 07 Oct 2008
TL;DR: The development of advanced W-band and G-band millimeter-wave monolithic integrated circuits (MMICs) and modules for use in a high-resolution radar system operating at 210 GHz have been presented.
69