Wave Scattering from Surface-Breaking Cracks Sonified by a Linear Phased Array

1999 ◽  
pp. 71-78
Author(s):  
W. A. K. Deutsch ◽  
A. Cheng ◽  
J. D. Achenbach
Keyword(s):  
Wave Scattering ◽  
Phased Array

scholarly journals Spaced-Antenna Interferometry to Detect and Locate Subvolume Inhomogeneities of Reflectivity: An Analogy with Monopulse Radar

2008 ◽  
Vol 25 (11) ◽  
pp. 1921-1938 ◽  
Author(s):  
Guifu Zhang ◽  
Richard J. Doviak
Keyword(s):  
Correlation Function ◽  
Power Spectrum ◽  
Correlation Coefficient ◽  
Wave Scattering ◽  
Cross Correlation ◽  
Phased Array ◽  
Weather Radar ◽  
Individual Object ◽  
Potential Applications ◽  
Nonuniform Beam

Abstract The theory of spaced-antenna interferometry (SAI) is formulated to detect and locate deterministic objects and reflectivity inhomogeneities embedded within the phased-array weather radar’s resolution volume V6 and to improve weather radar performance. An analogy is made between monopulse tracking and SAI. The cross-correlation function and its power spectrum are derived based on wave scattering by a large deterministic object and clusters of randomly distributed precipitation particles. It is shown that nonuniform beam filling leads to an effective narrower beam and an increase in cross-correlation coefficient at zero lag. Hence, an individual object or a subvolume inhomogeneity can be detected and located by SAI. This capability further enhances the potential applications of phased-array weather radar used as a multimission system.

Ultrasonic Wave Scattering by a Line Crack in a Solder Joint

1999 ◽  
Vol 11 (1) ◽  
pp. 117-135
Author(s):  
P. Dineva ◽  
D. Gross ◽  
T. Rangelov
Keyword(s):  
Solder Joint ◽  
Ultrasonic Wave ◽  
Wave Scattering ◽  
Line Crack

Advanced Volumetric Phased Array Inspection for Un-Bored Steam Turbine Rotors

2018 ◽  
Author(s):  
Robert Bergman ◽  
Andres-Sacristan Mauro ◽  
Marriner Brian
Keyword(s):  
Steam Turbine ◽  
Phased Array ◽  
Turbine Rotors

The Study of Reliability Analysis Method Considering The Fault Characteristics of Active Phased Array Antenna

2018 ◽  
Vol 18 (4) ◽  
pp. 291-300
Author(s):  
Seungsang Lee ◽  
Ilhoon Cho ◽  
Junghoon Lee ◽  
Yeonkyeong Park
Keyword(s):  
Reliability Analysis ◽  
Phased Array ◽  
Array Antenna ◽  
Analysis Method ◽  
Phased Array Antenna

The Evaluation on the Observation Accuracy of Phased Array Weather Radar

2014 ◽  
Vol 134 (4) ◽  
pp. 204-210 ◽  
Author(s):  
Yuki Hirano ◽  
Kouichi Maruo ◽  
Shigeharu Shimamura ◽  
Satoru Yoshida ◽  
Tomoo Ushio ◽  
...  
Keyword(s):  
Phased Array ◽  
Weather Radar

Phase Control and Calibration Characteristics of Optically Controlled Phased Array Antenna Feed Using Multiple SMFs

2011 ◽  
Vol E94-C (10) ◽  
pp. 1634-1640 ◽  
Author(s):  
Daiki TAKEUCHI ◽  
Wataru CHUJO ◽  
Shin-ichi YAMAMOTO ◽  
Yahei KOYAMADA
Keyword(s):  
Phased Array ◽  
Phase Control ◽  
Array Antenna ◽  
Antenna Feed ◽  
Phased Array Antenna
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