Simulation Approach to Calculate the Separation Error of Target and Background from Metal Pylon Deformation

An, Dawei; Chen, Wuyi

doi:10.1109/imccc.2015.157

Cited by 1 publication

(2 citation statements)

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“…Finally, the simulation results of the amplitude and phase from FEKO are processed by circle fitting. The detailed procedures are introduced in reference [16] and can be depicted as a flowchart in Fig. 4.…”

Section: Simulation Configurationmentioning

confidence: 99%

“…ρV (X) ≤ m MAX (16) where ρ is the density of the pylon material, V (X) the volume of the metal pylon calculated according to the structural parameters, and m MAX the maximum weight of the metal pylon that is acceptable in the design. The goal of optimization is to derive the minimum value of the fitness function in Eq.…”

Section: Implementation In Optimization and Analysismentioning

confidence: 99%

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An Efficient Analysis on the Fitting Error Caused by the Deformation of Metal Pylon in the RCS Measurement

An¹,

Chen²

2016

PIER M

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Abstract-Target-supporting metal pylon predominantly contributes to background scattering in radar cross section measurement. The separation of scattering from the target and background demands stable background scattering. However, target translation creates variations in metal pylon deformation and changes its scattering, which yields errors in background separation. Analyzing the relationship between the structural parameters of metal pylon and the error caused by its deformation is necessary to reduce errors. A simplified mapping of the relationship is deduced according to the mechanical and electromagnetic theories involved. The approach combines geometrical theory of diffraction for pylon scattering and numerical integration in calculating the deflection of metal pylon to determine the variation of metal pylon scattering, and calculates error in the circle fitting caused by the variation. Simulations with commercial software are employed to verify the efficiency of the numerical model. Although it is slightly contaminated by target-pylon interaction, the approach is 800 times faster than the software simulation. An example of optimization and analysis is provided to demonstrate the trends of optimum structural parameters and fitting error within different pylon weight limits. Such an example proves that the approach can overcome the deficiency of traditional analysis which separately assesses the mechanical and RCS performances of metal pylon.

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Section: Simulation Configurationmentioning

confidence: 99%

Section: Implementation In Optimization and Analysismentioning

confidence: 99%