Short-Pulse Target Characteristics

Bechtel, M.

doi:10.1007/978-94-010-1531-8_1

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…According to the GO expression of hyperboloids at higher frequency bands [19], [20], when the elevation angle θ , defined as the radar line of sight (LOS) bias from broadside incidence, is small, the analytical expression of the RCS for the EC can be derived using differential geometry [21]. A detailed derivation can be found in Appendix-A.…”

Section: A Geometry and Go Solution Of The Theoretical Rcsmentioning

confidence: 99%

“…The RCS of a double-curved surface at high frequency can be approximated based on GO theory as [19], [20] σ GO = πρ 1 ρ 2 (A1) where ρ 1 and ρ 2 are the two principal curvature radii of the calibrator at the specular reflection point with ρ 1 and ρ 2 λ, with λ being the radar wavelength. The specular reflection point is the point where the outer normal points to the radar LOS.…”

Section: A Go Solutionmentioning

confidence: 99%

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Comprehensive Characterization of an Ellipsoidal Cylinder Calibrator for Radar Cross Section Measurement

Liu

2022

IEEE Trans. Antennas Propagat.

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Currently, a set of scaled squat circular cylinders (SCCs) have been widely used for co-polarimetric radar cross section (RCS) calibration in various test ranges where low RCS metal pylons are used. The major drawback of a circular cylinder (CC) is its high sensitivity to elevation angle, as well as the frequency-dispersive theoretical RCS. In this work, we propose a new RCS calibrator, the metal ellipsoidal cylinder (EC), whose RCS characteristics are similar to a metal sphere, while it can be mounted on a metal pylon with little electromagnetic (EM) interactions as a CC does. A high-frequency RCS expression is derived using geometrical optics (GO) for the new calibrator. The scattering mechanisms are analyzed to establish the accurate parametric representation of the theoretical RCS. Based on surface current analysis and numerical calculation, the calibrator-pylon interaction (CPI), the angular sensitivity, and the bistatic RCS characteristics are discussed, enabling the calibration uncertainty evaluation for applying the proposed calibrator in the ground-plane range (GPR). Numerical and experimental results of a manufactured squat EC (SEC) are presented to demonstrate the excellent performance of the proposed EC calibrator for co-polarimetric RCS calibration.

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Section: A Geometry and Go Solution Of The Theoretical Rcsmentioning

confidence: 99%

Section: A Go Solutionmentioning

confidence: 99%

Comprehensive Characterization of an Ellipsoidal Cylinder Calibrator for Radar Cross Section Measurement

Liu

2022

IEEE Trans. Antennas Propagat.

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“…In the literature [15,16], Keller and Akira develop the mathematical description of the scattering centre at the tip and edge of the target according to the theory of geometric diffraction. In the literature [17,18], Bechtel uses scattering centre model to classify local scattering sources. With the development and application of broadband radar, target scattering characteristics measured in high frequency region can be well described by target scattering centre model, which verifies the effectiveness of target scattering centre model [19].…”

Section: Radar Target Scattering Centre and Hrrpmentioning

confidence: 99%

Evaluation method for HRRP imaging quality based on intuitionistic interval fuzzy set

et al. 2019

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Aimed at the performance evaluation of radar target recognition system based on high resolution range profile (HRRP), this paper proposes an evaluation method of HRRP quality based on intuitionistic interval fuzzy set under the background that HRRP has the characteristics of translation, attitude and velocity sensitivity. Compared with the general evaluation method, this method has two improvements. One is to extend the index value from single value to interval value by interval estimation method in mathematical statistics, which introduces sample variance into calculation to improve the utilization rate of sample information. The other is to construct intuitionistic fuzzy set by using correct recognition rate derivative sequence (DSCRR) and false recognition rate derivative sequence (DSFRR), which can make full use of experimental data and improve the reliability of experimental results. The distance calculation method of intuitionistic interval fuzzy set is used to get the distance between each scheme and the ideal scheme. Finally, the score of schemes which represent different HRRP imaging quality are obtained, and the performance evaluation is completed. The evaluation results obtained from simulation validation experiments are in accordance with objective facts, which proves the validity of this evaluation method.

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A Unified Method of Broadband Acoustic Characterization for Fish Schools, Channels, and Range-Extended Targets

Altes

Faust²

1979

Oceans '79

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Short-Pulse Target Characteristics

Cited by 4 publications

References 24 publications

Comprehensive Characterization of an Ellipsoidal Cylinder Calibrator for Radar Cross Section Measurement

Comprehensive Characterization of an Ellipsoidal Cylinder Calibrator for Radar Cross Section Measurement

Evaluation method for HRRP imaging quality based on intuitionistic interval fuzzy set

A Unified Method of Broadband Acoustic Characterization for Fish Schools, Channels, and Range-Extended Targets

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