Dynamic RCS Prediction of Rapidly Blooming Chaff Cloud and its Validation using Measurement on Scaled-down

Verandra Kumar; Ajit Kumar Singh; Prashant Vasistha; Ravindra Kumar

doi:10.32452/IJAMT.2018.170175

Authors

Verandra Kumar Defence Laboratory, DRDO, Jodhpur, 342011, INDIA
Ajit Kumar Singh Defence Laboratory, DRDO, Jodhpur, 342011, INDIA
Prashant Vasistha Defence Laboratory, DRDO, Jodhpur, 342011, INDIA
Ravindra Kumar Defence Laboratory, DRDO, Jodhpur, 342011, INDIA

DOI:

https://doi.org/10.32452/IJAMT.2018.170175

Keywords:

RCS, chaf, dipole, polarization

Abstract

In modern warfare scenario, chaff cloud consisting of millions of small individual microwave scatterers, is used as a passive
electronic countermeasure to rapidly create a false target having Radar Cross Section (RCS) more than a real target. RCS prediction of chaff cloud by modeling and simulation is a complex phenomenon as each scatterer has different resonating length, oriented randomly and interact with each other in a complex form. Monostatic RCS measurement of the chaff cloud in the real scenario is also difficult as the target size is quite big and shape and size are changing with time. In the present paper, the dynamic RCS prediction of chaff cloud has been carried out by modeling and simulation using the in-house developed software in MATLAB. Various regular shapes like a plume, sphere, cylindrical and cubical have been presumed and interaction of each scatterer has been analytically evaluated based on screening effect. RCS response of chaff clouds of different shapes and sizes were predicted. To validate the predicted RCS values, miniaturized models of different shapes and sizes are prepared to simulate scale down dynamic chaff cloud blooming. Their monostatic RCS responses were measured in the anechoic chamber for 8-18 GHz. A good agreement is observed in measurement and predicted values.

Metrics

Metrics Loading ...

References

. B. Butters, Chaff, IEE Proc., vo1.129, pt. F, no. 3, pp. 197-201, 1982.

. Mingshan L.V.and W. Longtao, Research on the efficiency of the chaff jamming corridor, IEEE Conference on Information Science and Control, pp. 1673-1676, 2017.

. P. Peebies, Bistatic radar cross section of chaff', IEEE Transactions on Aerospace and Electronic System, vol. AES20, No.2 University of Florida, pp. 128-140, March 1984.

. Palermo, C. and L. Bauer, Bistatic scattering cross section of chaff dipoles with application to communication, Proceedings of the IEEE, vol. 53, no. 8, pp. 1119-1121, Aug.1965.

. Xianli, W. and Q. Teng, Chaff jamming effect to radar and math model building, CIE International Conference on Radar, Shanghai, China, Oct 2006.

. S. Marcus, Dynamics and radar cross section density of chaff cloud, IEEE Transaction on Aerospace and Electronic System vol. 40, no.1, Rafael Israel, pp. 93-102, January 2004.

. K. Dedrick, A. Hessing, and G. Johnson, Bistatic radar scattering by randomly oriented wires, IEEE Transactions on Antennas and Propagation, vol. AP-26, no.3, pp 420-426, May 1978.

. Cui G. and L. Shi, Identification of chaff interference based on polarization parameter measurement, IEEE Conference on Electronic Measurement and Instruments, Yangzhou, China, pp. 392-396, Oct 2017.

. W. Estes and C. Pinson, Spectral characteristics of radar echoes from aircraft dispensed chaff, IEEE Transactions on Aerospace and Electronic Systems, vol. AES-21, no. 7, pp 8-20, Jan. 1985.

. R. Wickliff and R. Garbacz, The average backscattering cross sections from randomized resonant dipoles, IEEE Transactions on Antenna and Propagation, vol. 23, no. 3, pp. 503-505, 1974.

. Y. Guo and H. Uberall, Bistatic radar scattering by a chaff cloud, IEEE Transactions on Antenna and Propagation, vol. 40, no. 7, pp. 837 – 841, July 1992.

. S. Kownacki, Screening (shielding) effect of chaff cloud, IEEE Transactions on Aerospace and Electronic Systems, vol. AES3, no. 4, pp. 731-734 Feb. 1967.