scholarly journals A Method for Estimating the Polarimetric Scattering Matrix of Moving Target for Simultaneous Fully Polarimetric Radar

Sensors ◽  
2018 ◽  
Vol 18 (5) ◽  
pp. 1418 ◽  
Author(s):  
Fulai Wang ◽  
Chao Li ◽  
Chen Pang ◽  
Yongzhen Li ◽  
Xuesong Wang
Keyword(s):  
Scattering Matrix ◽  
Moving Target ◽  
Polarimetric Radar

Instantaneous polarimetric radar PSM measurement for moving target

2009 ◽  
Author(s):  
He Mi ◽  
Chang Yuliang ◽  
Wang Xue-song ◽  
Li Yong-zhen ◽  
Xiao Shunping
Keyword(s):  
Moving Target ◽  
Polarimetric Radar

Frequency Calibration for the Scattering Matrix of the Simultaneous Polarimetric Radar

2018 ◽  
Vol 15 (3) ◽  
pp. 429-433 ◽  
Author(s):  
Chao Li ◽  
Yong Yang ◽  
Yong-zhen Li ◽  
Xue-song Wang
Keyword(s):  
Scattering Matrix ◽  
Polarimetric Radar ◽  
Frequency Calibration

scholarly journals Analysis of Raindrop Shapes, Fall Velocities, and Scattering Calculations during Tropical Storm Nate

2019 ◽  
Author(s):  
Merhala Thurai ◽  
Sophie Steger ◽  
Franz Teschl ◽  
Michael Schoenhuber
Keyword(s):  
Integral Equation ◽  
Computer Simulation ◽  
Scattering Matrix ◽  
Radar Data ◽  
Tropical Storm ◽  
Polarimetric Radar ◽  
Matrix Elements ◽  
Warm Rain ◽  
Raindrop Size ◽  
Scattering Matrix Elements

Tropical storm Nate, which was a powerful hurricane prior to landfall along the Alabama coast, traversed north towards our instrumented site in Hunstville, AL. The rain bands lasted 18 h and the 2D-video disdrometer (2DVD) captured the event which was shallow and indicative of pure warm rain processes. Measurements of raindrop size, shape and velocity distributions are quite rare in pure warm rain and are expected to differ from cold rain processes. In particular, asymmetric shapes due to drop oscillations and their impact on polarimetric radar signatures in warm rain have not been studied so far. Recently, the 2DVD data has been used for 3D reconstruction of asymmetric raindrop shapes but their fraction (relative to the more common oblate shapes) in warm rain has yet to be ascertained. Here we compute the scattering matrix drop-by-drop using Computer Simulation Technology integral equation solver for drop sizes>2.5 mm. From the scattering matrix elements, the polarimetric radar observables are simulated by integrating over 1 minute consecutive segments of the event. These simulated values are compared with dual-polarized C-band radar data located at 15 km range from the 2DVD site to evaluate the contribution of the asymmetric drop shapes.

Moving Target’s Scattering Matrix Estimation With a Polarimetric Radar

2020 ◽  
Vol 58 (8) ◽  
pp. 5540-5551
Author(s):  
Chao Li ◽  
Yong-Zhen Li ◽  
Yong Yang ◽  
Chen Pang ◽  
Xue-Song Wang
Keyword(s):  
Scattering Matrix ◽  
Polarimetric Radar ◽  
Matrix Estimation

Moving Target Scattering Matrix Measurement Using the Three Polarizations Scheme

2019 ◽  
Vol 16 (10) ◽  
pp. 1555-1559
Author(s):  
Chao Li ◽  
Yong Yang ◽  
Xue-Song Wang ◽  
Yong-Zhen Li
Keyword(s):  
Scattering Matrix ◽  
Moving Target

“Preparation of Single Crystalline Gold Films for ED Studies”

1972 ◽  
Vol 30 ◽  
pp. 634-635
Author(s):  
Joseph D. C. Peng
Keyword(s):  
Crystal Morphology ◽  
Diffraction Theory ◽  
Scattering Matrix ◽  
Vacuum Evaporation ◽  
Gold Films ◽  
Matrix Formulation ◽  
Silver Films ◽  
Single Crystalline ◽  
Grating Pattern ◽  
Stacking Disorder

The relative intensities of the ED spots in a cross-grating pattern can be calculated using N-beam electron diffraction theory. The scattering matrix formulation of N-beam ED theory has been previously applied to imperfect microcrystals of gold containing stacking disorder (coherent twinning) in the (111) crystal plane. In the present experiment an effort has been made to grow single-crystalline, defect-free (111) gold films of a uniform and accurately know thickness using vacuum evaporation techniques. These represent stringent conditions to be met experimentally; however, if a meaningful comparison is to be made between theory and experiment, these factors must be carefully controlled. It is well-known that crystal morphology, perfection, and orientation each have pronounced effects on relative intensities in single crystals.The double evaporation method first suggested by Pashley was employed with some modifications. Oriented silver films of a thickness of about 1500Å were first grown by vacuum evaporation on freshly cleaved mica, with the substrate temperature at 285° C during evaporation with the deposition rate at 500-800Å/sec.

Where's That Wascally Wilber? The Challenges of Hitting a Moving Target

PsycCRITIQUES ◽  
2007 ◽  
Vol 52 (13) ◽  
Author(s):  
Douglas A. MacDonald
Keyword(s):  
Moving Target

Pediatric rehabilitation psychology: Rehabilitating a moving target.

2017 ◽  
Vol 62 (3) ◽  
pp. 223-226 ◽  
Author(s):  
Jacqueline N. Kaufman ◽  
Sarah Lahey ◽  
Beth S. Slomine
Keyword(s):  
Moving Target ◽  
Pediatric Rehabilitation ◽  
Rehabilitation Psychology
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