Influence of the Interaction of an Object with a Support on the Accuracy of RCS Measurement of Reference Reflectors
Влияние взаимодействия объекта с опорой на точность измерения ЭПР эталонных отражателей
2021-06-28
SCID: 54.1/4e7fuv3p
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FEKO method of momentsradar absorbing material (RAM)radar cross-section (RCS)reference reflectors (spheres, vertical cylinders)support/pylon interaction
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Abstract (AI)
The paper considers the influence of the interaction of the object under test with the top part of the pylon on the results of radar cross-section (RCS) measurement. The computer simulation of an experimental RCS measurement of the object in the field of a plane wave is carried out. The computations are performed in the FEKO program by the method of moments. Zones of the pylon that most affect the single-position RCS values of the object have been identified. These zones must be covered with a radar absorbing material (RAM) when conducting experimental studies of the objects scattering properties. The errors of the RCS measurement for two types of objects - spheres and vertically located cylinders - depending on the levels of the measured values are revealed. Three sizes of objects by their RCS values are considered to evaluate the measurement error at levels of approximate 0.1 m2, 0.01 m2, and 0.001 m2.
Key Findings
1
FEKO method-of-moments simulations identify specific pylon zones that most affect measured RCS and should be covered with radar absorbing material (RAM).
2
Interaction between the object under test and the top part of the pylon significantly influences single-position RCS measurement results.
3
Measurement error evaluated for three RCS magnitudes: approximately 0.1 m^2, 0.01 m^2, and 0.001 m^2, showing dependence of error on object size/level.
4
RCS measurement errors are quantified for two object types (spheres and vertical cylinders) and vary with measured RCS level.
Research Object
Reference reflectors (spheres and vertically oriented cylinders) mounted on a pylon interacting with the pylon top during radar cross-section (RCS) measurement
Research Subject
Effect of the object's interaction with the pylon top on the accuracy/errors of single-position radar cross-section (RCS) measurements across different RCS magnitude levels and identification of pylon zones requiring radar absorbing material (RAM)
Publication Details
Publication Date
2021-06-28
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