نتایج جستجو برای: Radar cross section (RCS)

تعداد نتایج: 648422  

Journal: :رادار 0
مهران تسلیمی عطاالله ابراهیم زاده

radar cross section (rcs) calculation is an important issue of objects stealth and identification. it is necessary to design the rcs software because of the high cost of rcs measurements in practice. in this paper, designing of efficient software using physical optics theorem for radar cross section calculation of the complex perfect electric conductors or complex dielectric objects for high fr...

Journal: :journal of electrical and computer engineering innovations 0
hossein mohammadzadeh department‎ of electrical and computer engineering‎, ‎isfahan university of technology (iut)‎, ‎isfahan‎, ‎iran abolghasem zeidaabadi-nezhad1 department‎ of electrical and computer engineering‎, ‎isfahan university of technology (iut)‎, ‎isfahan‎, ‎iran zaker hossein firouzeh department‎ of electrical and computer engineering‎, ‎isfahan university of technology (iut)‎, ‎isfahan‎, ‎iran

the radar cross section of a target plays an important role in the detection of targets by radars‎. ‎this paper presents a new method to predict the bistatic and monostatic rcs of coated electrically large objects. ‎the bodies can be covered by lossy electric and/or magnetic radar absorbing materials (rams)‎. ‎these materials can be approximated by the fresnel reflection coefficients‎. ‎the pro...

2016
E J Hughes M Leyland

Many missile–target simulation systems use random numbers to mimic the effects of a fluctuating target Radar Cross Section (RCS) in an attempt to minimise simulation times. In this paper a Genetic Algorithm is used to optimise the complexity of a pointscatterer model with a realistic radar cross section, ultimately allowing real measured data to be used in simulations. The performance of the ge...

2012
A. Upendra Raju Jyothi Balakrishnan

In this paper, a novel method of partial coating to reduce the Radar Cross Section (RCS) of a complex shaped perfectly electrically conducting (PEC) aircraft, of electrically large size, is proposed. The physical optics (PO) method is used to identify the hot spots of the PEC aircraft. An empirical procedure is then proposed to coat partial contiguous areas with Radar Absorbent Material (RAM). ...

2009
R. L. Haupt S. E. Haupt

− This paper presents results from calculating the radar cross section (RCS) of two maritime radar reflectors using the method of moments. The Echomaster 152, although smaller in size, produces a higher maximum RCS than the Echomax 230 that includes three layers of corner reflectors. The Echomaster 152 also has deeper nulls in the RCS pattern, which means it is less detectable at those angles.

Journal: :رادار 0
سلیمان حاجی صادقیان نجف آبادی عباس شیخی

abstract according to the adventages of passive radars they have been reconsidered recently due to development of signal processing technology. in the field of sea targets detection using passive radar few research have been reported. this paper presents a new method to detect sea targets using adaptive filter weights variation model and using the fact that the radar cross section of sea target...

2014
P. JYOTSNA TIRUMALA RAO

The performance of multiple input multiple output (MIMO) radar configurations of distributed antennas are analyzed. Statistical multiple input multiple output (MIMO) radar develops angular diversity to mitigate the impact of radar cross section fluctuations (RCF). The fluctuations can be modeled with scattering model consists of non-orthogonal waveforms for fast target or radar cross section fl...

2015
Joon-Tae Hwang Suk-Yoon Hong Jee-Hun Song Hyun-Wung Kwon

Radar Cross Section (RCS) is one of the most considerable parameters for ship stealth design. As modern ships are larger than their predecessors, RCS must be managed at each design stage for its reduction. For predicting RCS of ship, Radar Cross Section Analysis Program (RACSAN) based on Kirchhoff approximation in high frequency range has been developed. This program can present RCS including m...

2002
Shawn Herman

We present two stochastic filters for an FM-band passive air surveillance radar. The first system uses an extended Kalman filter and delay-Doppler measurements to track targets. The second system uses a particle filter to simultaneously track and classify targets. Automatic target recognition is made possible by the inclusion of radar cross section (RCS) in the measurement vector. The extended ...

2018
G. G. Machado

This paper reports a new method for reducing the Radar Cross-Section (RCS) of a metal backed dipole antenna. Numerical simulations are used to show that when the Perfect Electrical Conductor (PEC) is replaced by a carefully designed Frequency Selective Surface (FSS), the electromagnetic performance of the antenna is similar in band, but the RCS of the structure is significantly lower out of ban...

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