What question did this study set out to answer?

To establish closed-form high-frequency approximations of the physical optics scattering integral for far-field radar backscatter from general curved edged reflectors.

March 1, 1994IEEE Transactions on Antennas and Propagation

High frequency approximations to the physical optics scattering integral

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Authors

WGWilliam B. GordonWestern University

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Implication

Theoretical analysis demonstrates high-frequency physical optics approximations for curved reflecting surfaces, indicating efficient radar backscatter prediction outside caustic regions.

Key Points

To establish closed-form high-frequency approximations of the physical optics scattering integral for far-field radar backscatter from general curved edged reflectors.
Decomposed the physical optics scattering integral into the sum of a specular contribution and a boundary-edge line integral.
Applied the method of stationary phase to the boundary line integral to derive explicit closed-form expressions across arbitrary aspect angles.
Derived analytical high-frequency approximations that effectively model far-field backscatter from curved reflectors.
Demonstrated accurate performance for smooth surfaces with Gaussian curvature of constant non-zero sign, with breakdown occurring only at caustics or when specular points intersect reflector edges.

Cite This Study

William B. Gordon (1994) studied this question.

synapsesocial.com/papers/6a70524a660549caf2c4e64f https://doi.org/10.1109/8.280733

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Implication

Theoretical analysis demonstrates high-frequency physical optics approximations for curved reflecting surfaces, indicating efficient radar backscatter prediction outside caustic regions.

High frequency approximations to the physical optics scattering integral

Discussion

Member takes

Implication

Key Points

Cite This Study

High frequency approximations to the physical optics scattering integral

Discussion

Member takes

Implication

Key Points

Cite This Study

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