Radar Cross Section of Simple and Complex Targets in the C-band: A Comparison between Anechoic Chamber Measurements and Simulations

Alves, Mara Lisa; Martins, InÃ¡cio M.; Miacci, M.A.S.; Rezende, Mirabel Cerqueira

doi:10.2529/piers071220090212

Cited by 6 publications

(5 citation statements)

References 5 publications

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“…The plot also exhibits a symmetric radiation pattern. The RCS values agrees with the values, reported by Hudec et al in [6][7][8][9][10][11] GHz band [16,17], for similar type of missile. The currents formed on the missile surface are computed and shown in Fig.…”

Section: Case Iii: Wave Incidence Normal To the Missile Axissupporting

confidence: 91%

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Computation and analysis of RCS for a kinetic energy type anti armour missile at Ka band

Muthu

Kumar

Jayaraman

2015

JAE

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Radar Cross Section (RCS) computation and analysis are carried out for a high speed, kinetic energy missile at 35 GHz. The radar cross section simulations were performed under bistatic conditions, using a 3D Electromagnetic field solver. RCS values for standard geometries such as cylinder, cone -cylinder combination are calculated under different excitation conditions and the results are verified with literature, so as to fix the settings in the solver. A maximum RCS value for the missile is obtained as −4.9 dBsm under broad side excitation. RCS values of −22.25 dBsm and 4.94 dBsm are obtained for 0 • (Nose cone) and 180 • direction, when excited in the frontal region, i.e., 0 • azimuth and 0 • elevation. Further, monostatic simulation under 0 • to 180 • excitation shows a large RCS value of −4 dBsm at 90 • , corresponding to large surface area of the missile. The effect of frequency on the RCS of the missile is also determined in 30 to 40 GHz band. A comparison of integral equation solver and asymptotic solver for RCS computation indicates almost similar values, with a deviation less than 5 dB in most of the ranges. However, with compromise on accuracy, the asymptotic solver is found to consume only 5% of the total time required by integral equation solver.

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Section: Case Iii: Wave Incidence Normal To the Missile Axissupporting

confidence: 91%

“…Numerical evaluation of short range air to air missile was reported by Marcelo and Luiz [7]. A comparative study of theoretical and experimental RCS of a hypothetical missile was done by Alves et al [8]. A measure of RCS can also provide insight for the design of targets with minimum RCS, so that they can avoid detection.…”

Section: Introductionmentioning

confidence: 99%

Computation and analysis of RCS for a kinetic energy type anti armour missile at Ka band

Muthu

Kumar

Jayaraman

2015

JAE

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“…A question that is frequently raised about such simulations is whether the results are accurate, and this is not a simple question with a short answer. Contemporary RCS simulation software is usually accurate to within 1 dB along the boresight direction compared with certain standard shape corner reflector measurements, and some benchmark literatures exist [53,58]. SAAB joined with Boeing a few years ago to design and build the new US trainer aircraft T-X [59] using the same RCS simulation software we use in this article, only the license fee for their cluster machine is rumored to amount to millions of US dollars.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of an S-Shaped Air Inlet on the Reduction of Front Bistatic Radar Cross Section of a Fighter Engine

Chung¹,

Tuan²

2021

PIER B

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The engine of a fighter plane is one of the largest scattering centers of the entire aircraft. One possible way of reducing the radar cross section (RCS) of the engine is to use an S-shaped bending air inlet to avoid direct radar wave illumination and reflection. We evaluate the efficacy of an S-shaped air inlet on RCS reduction by simulating the boresight and ±15 • bistatic RCS for a digital model of an engine located behind an S-shaped inlet, using a multi-level fast multipole method (MLFMM) code in the S and X bands. The results show that a curved S-type air inlet can reduce the engine boresight bistatic RCS by ∼ 10-12 dBsm at 3 GHz, and ∼ 16 dBsm at 10 GHz when radar wave is incident from boresight, but not to the level required by RF stealth standards. When the radar waves are incident from θ = 105 • ϕ = 90 • or θ = 90 • ϕ = 345 • , the RCS reduction is less effective, which is the results of the bend direction of the S-type air inlet.

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“…Это связано с возможностью выбора методов решения дифракционной задачи, предполагающих представление проводящей поверхности объекта в виде совокупности плоских треугольных фацет, а не только как объемных элементов (тетраэдров в случае Ansys HFSS), что, в свою очередь, позволяет существенно ускорить процесс расчета. Кроме того, сравнительная оценка результатов натурных измерений и моделирования поля рассеяния хвостовой части авиационной ракеты показала высокую точность данных, получаемых с ее помощью [9]. Из-за неточности моделирования двигателя и головки самонаведения оценки ЭПР около -90° или 90° могут несколько отличаться от реальных значений.…”

Section: электроника радиотехника |unclassified

Modelling of the anti-tank guided missile scattering field and radar performance evaluation in terms of missile detection

Zavodskikh¹,

Kupryashkin

2021

Journal of «Almaz – Antey» Air and Space Defence Corporation

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The study presents the results achieved in an analysis of the variation of the level of an echo signal generated by the FGM-148 Javelin anti-tank missile, received by the active protection system radar with consideration given to the target attack flight profile. For our study, we use the results of modelling of the missile’s scattering field at frequencies of 1, 3, 6, and 10 GHz using the Altair FEKO CAD suite. According to estimated data, a radar using the frequency-modulated signal and operating at a medium radiation power of up to 1 W is able to detect a missile at a distance of at least 1,000 m. The results show that a combination of low power and a continuous broadband signal (100…150 MHz) along with coherent integration to units of seconds ensures concealed operations of the active protection system radar (estimated range of its radiation detection by a reconnaissance radar is not greater than 10 km).

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Radar Cross Section of Simple and Complex Targets in the C-band: A Comparison between Anechoic Chamber Measurements and Simulations

Cited by 6 publications

References 5 publications

Computation and analysis of RCS for a kinetic energy type anti armour missile at Ka band

Computation and analysis of RCS for a kinetic energy type anti armour missile at Ka band

Efficacy of an S-Shaped Air Inlet on the Reduction of Front Bistatic Radar Cross Section of a Fighter Engine

Modelling of the anti-tank guided missile scattering field and radar performance evaluation in terms of missile detection

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