Numerical evaluation of an air to air missile rcs signature at x-band

Abstract

The remote detection of a vehicle requires that some kinds of its emissions are tracked and detected. Usually, electromagnetic emissions are used in the form of radar (electromagnetic waves in the range of radiofrequency and microwaves). Different types of antennas are used as sensors, tailored to the signal frequency band and its polarization, as well as to the target distance (higher gain antennas used for low amplitude signals). For the specific case of radars, the use of computational methods to address the electromagnetic signature (spatial pattern of the scattered energy from the object) has become widespread, given the high costs and complex equipment associated with these respective measurements. Therefore, the use of computer simulation is ideally suited for creating a realistic database of targets and its respective signatures. The same computer-created signatures database can also be used for the thermal range, enabling a complete technology solution for the signature and design of stealth vehicles, with reduced emissions.

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

“…The difference is found to less than 5 dB for most of the ranges. Similar observations have been reported by Pertoni et al [7] in the case of air to air missile.…”

“…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.…”

“…This observation is in line with the cone -cylinder, conefrustum structures under similar excitation conditions. Further the findings also coincide with the results of Pertoni et al in the case of air to air missile, where the RCS value is maximal at the rear side, owing to the presence of fins [7]. The polar plot of the re radiation pattern shows the main lobe at 180 • with a 3 dB angular width as 4.6 • .…”

“…Generally, the asymptotic solver is used for the RCS computation for electrically large objects. The asymptotic solver uses the ray tracing method (shooting and bouncing rays) for the RCS computations [7]. The mesh generations are very robust and quite insensitive to the quality of the CAD model.…”

“…For e.g., Oderland et al have evaluated the RCS of A32 lansen aircraft and a towed target, at X band [6]. 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].…”