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1 May 2019 Two unique W-band radar clutter signatures
Ariel Ibrahim, Lee Moyer
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Proceedings Volume 11019, Situation Awareness in Degraded Environments 2019; 110190P (2019) https://doi.org/10.1117/12.2518132
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States
Abstract
The U.S. Army has collected W-band Radar Cross Section (RCS) data on various rotorcraft landing area clutter types and potential hazards. In collecting this data, two unique features were observed that to our knowledge have been reported in the literature: • When assessing the clutter reflectivity (σo) of long, dry grass in flat terrain with moist soil, a very sharp reduction in the σo value was observed with decreasing EL angle. However, the σo began to rapidly increase when the elevation (EL) angle became less than about 5°. • When assessing the RCS of chain link fencing, the peak response occurred at normal incidence for small EL angles. However, as the EL angle was increased, the off-normal angle for the maximum RCS response shifted by more than 35°. The causes of these seemingly anomalous effects are described in this paper.
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Ariel Ibrahim and Lee Moyer "Two unique W-band radar clutter signatures", Proc. SPIE 11019, Situation Awareness in Degraded Environments 2019, 110190P (1 May 2019); https://doi.org/10.1117/12.2518132
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KEYWORDS
Radar
Reflectivity
Backscatter
Data modeling
Dielectrics
Calibration
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