Radar cross-section (RCS) analysis of high frequency surface wave radar targets

Realistic high frequency surface wave radar (HFSWR) targets are investigated numerically in terms of electromagnetic wave -- target interactions. Radar cross sections (RCS) of these targets are simulated via both the finite-difference time-domain (FDTD) method and the Method of Moments (MoM). The virtual RCS prediction tool that was introduced in previous work is used for these investigations. The virtual tool automatically creates the discrete FDTD model of the target under investigation and performs the FDTD RCS analysis. It also automatically constructs a MoM wire grid model of the target; therefore, it is also possible to compare FDTD results against the MoM-based NEC (Numerical Electromagnetic Code) data. Bi-static RCS patterns under a variety of illuminations over the whole HF band (3-30 MHz) are presented. The mono-static RCS vs. frequency of these targets is also given.

Anahtar Kelimeler:

Electromagnetic scattering, High frequency surface wave radar, HFSWR, Surveillance, Radar cross-section, RCS, RCS prediction, RCS reduction, Finite-difference time-domain, FDTD, Method of Moments, MoM, Numerical electromagnetic code, NEC, mono-stat

Radar cross-section (RCS) analysis of high frequency surface wave radar targets

Keywords:

Electromagnetic scattering, High frequency surface wave radar, HFSWR, Surveillance, Radar cross-section, RCS, RCS prediction, RCS reduction, Finite-difference time-domain, FDTD, Method of Moments, MoM, Numerical electromagnetic code, NEC, mono-stat,

PDF

___

J.M. Headric and M. I. Skolnik. “Over-the-horizon radar in the HF band.” in Proceedings of IEEE, Vol. 6, pp. 672, 1974.
J. M. Headrick. “HF over-the-horizon radar.” in Radar Handbook, 2nded., M. I. Skolnik, New York: McGraw-Hill, L. Sevgi. “Stochastic modeling of target detection and tracking in surface wave high frequency radars.” Int. J. of Numerical Modeling, Vol. 11, No 3, pp.167-181, May 1998.
L. Sevgi, A. M. Ponsford. “Multi-sensor, multi-resolution integrated maritime surveillance systems.” inIEEE Signal Processing and Applications Symp. (SIU’99), June 16-19, 1999, Ankara, Turkey.
L. Sevgi, A. M. Ponsford. “Multi-sensor integrated maritime surveillance systems.” in IEEE International Multi- Conference on Circuits, Systems, Communications and Computers (CSCC’99), July 4-8, 1999, Athens, Greece.
L. Sevgi, A. M. Ponsford, H.C. Chan. “An integrated maritime surveillance system based on surface wave HF radars, Part I – Theoretical background and numerical simulations.” IEEE Antennas and Propagation Magazine, V.43, N.4, pp.28-43, Aug. 2001.
A. M. Ponsford, L. Sevgi, H.C. Chan. “An integrated maritime surveillance system based on surface wave HF radars, Part II – Operational status and system performance.” IEEE Antennas and Propagation Magazine, V.43., N.5, pp.52-63, Oct. 2001.
L. Sevgi. “Stochastic modeling and simulation studies for the surface wave HF radar: Problems and challenges.” in A Special Session on HF Radars, Australian Int. Conference on Radar, Sep. 3-5, 2003.
L. Sevgi. Complex Electromagnetic Problems and Numerical Simulation Approaches. Piscataway, New Jersey: IEEE Press – John Wiley & Sons, 2003.
L. Sevgi. “Target reﬂectivity and RCS interaction in integrated maritime surveillance systems based on surface wave HF radars.” IEEE Antennas and Propagation Magazine, V.43, N.1, pp. 36-51, Feb. 2001.
M. C¸ akır, G. C¸ akır, L. Sevgi. “Parallel FDTD-based radar cross section (RCS) simulations.” in Fifth International Conference on Electrical and Electronics Engineering (ELECO 2007), Dec 5-9, 2007, Bursa, Turkey.
C¸ . Uluı¸sık, G. C¸ akır, M. C¸ akır, L. Sevgi. “Radar cross section (RCS) modeling and simulation: Part I – DeŞnitions, strategies, and canonical examples.” IEEE Antennas and Propagation Magazine, Vol. 50, No.1, pp.115-126, Feb G. C¸ akır, M. C¸ akır, L. Sevgi. “Radar cross section (RCS) modeling and simulation: Part II – A novel FDTD-based RCS prediction virtual tool.” IEEE Antennas and Propagation Magazine, Vol. 50, No.2, pp.81-94, Apr 2008.
G. J. Burke and A. J. Poggio. “Numerical electromagnetic code - Method of moments, Part I: Program description, theory.” Technical Document 116, Naval Electronics System Command (ELEX 3041), July 1977.