Investigation and performance evaluation of carbon black- and carbon fibers-based wideband dielectric absorbers for X-band stealth applications

2014 ◽  
Vol 28 (14) ◽  
pp. 1703-1715 ◽  
Author(s):  
Himangshu Bhusan Baskey ◽  
M. Jaleel Akhtar ◽  
T.C. Shami
Keyword(s):  
Performance Evaluation ◽  
Carbon Black ◽  
Carbon Fibers ◽  
X Band ◽  
And Performance

scholarly journals LEO to GEO-SAR Interferences: Modelling and Performance Evaluation

2019 ◽  
Vol 11 (14) ◽  
pp. 1720 ◽  
Author(s):  
Antonio Leanza ◽  
Marco Manzoni ◽  
Andrea Monti-Guarnieri ◽  
Marco di Clemente
Keyword(s):  
Performance Evaluation ◽  
Statistical Model ◽  
Synthetic Aperture ◽  
Periodic Pattern ◽  
Future Scenarios ◽  
Duty Cycles ◽  
X Band ◽  
And Performance ◽  
The Impact ◽  
Numerical Simulator

This paper proposes a statistical model to evaluate the impact of the signal backscattered by low Earth orbiting (LEO) synthetic aperture radar (SAR) and received by GEO-stationary orbiting SAR. The model properly accounts for the bistatic backscatter, the number of LEO-SAR satellites and their duty cycles. The presence of many sun-synchronous, dawn-dusk satellites creates a 24 h periodic pattern in interference that should be considered in the acquisition plan of future geostationary SAR. The model, implemented by a numerical simulator, allows also the prediction of performance in future scenarios of many LEO-SAR. Examples and evaluations are made here for X band.

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