TY - JOUR
T1 - Radar Cross Section of Trihedral Corner Reflectors
T2 - Theory and Experiment
AU - Polycarpou, Anastasis C.
AU - Balanis, Constantine
AU - Tirkas, Panayiotis A.
N1 - Funding Information:
'This work was supported by NASA, Langley Research Center under Grant NAG-1-562.
PY - 1995/9/1
Y1 - 1995/9/1
N2 - Two high-frequency methods are used to compute the scattered fields from both square and triangular trihedral corner reflectors. Scattering from a trihedral corner reflector is dominated by single, double, and triple reflections. Both methods use Physical Optics (PO) to calculate the single reflected fields. For the evaluation of the double and triple reflected fields, the first method uses Geometrical Optics (GO) for the initial reflections and PO only for the last reflection. On the other hand, the second method uses PO for the last two consecutive reflections. In addition to the reflected fields, the two methods use the Method of Equivalent Currents (MEC) to calculate the single diffracted fields from all the exterior edges. Higher-order terms, such as multiple diffractions, reflection-diffractions and diffraction-reflections, are not included in the analysis. The backscattered fields are computed for incident angles along both elevation and conical paths. The predicted results are compared with measurements and Finite Difference Time Domain (FDTD) data.
AB - Two high-frequency methods are used to compute the scattered fields from both square and triangular trihedral corner reflectors. Scattering from a trihedral corner reflector is dominated by single, double, and triple reflections. Both methods use Physical Optics (PO) to calculate the single reflected fields. For the evaluation of the double and triple reflected fields, the first method uses Geometrical Optics (GO) for the initial reflections and PO only for the last reflection. On the other hand, the second method uses PO for the last two consecutive reflections. In addition to the reflected fields, the two methods use the Method of Equivalent Currents (MEC) to calculate the single diffracted fields from all the exterior edges. Higher-order terms, such as multiple diffractions, reflection-diffractions and diffraction-reflections, are not included in the analysis. The backscattered fields are computed for incident angles along both elevation and conical paths. The predicted results are compared with measurements and Finite Difference Time Domain (FDTD) data.
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U2 - 10.1080/02726349508908436
DO - 10.1080/02726349508908436
M3 - Article
AN - SCOPUS:0029369304
SN - 0272-6343
VL - 15
SP - 457
EP - 484
JO - Electromagnetics
JF - Electromagnetics
IS - 5
ER -