Improved resistive-vee dipole based arbitrary polarization antenna system for ground penetrating radar

James W. Sustman; Waymond R. Scott Jr.

doi:10.1117/12.2050470

29 May 2014 Improved resistive-vee dipole based arbitrary polarization antenna system for ground penetrating radar

James W. Sustman, Waymond R. Scott Jr.

Proceedings Volume 9072, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XIX; 90720N (2014) https://doi.org/10.1117/12.2050470
Event: SPIE Defense + Security, 2014, Baltimore, MD, United States

Abstract

A broadband arbitrary polarization antenna system for ground penetrating radar applications is modified to improve its performance. The antenna system uses four, crossed, resistive-vee dipole (RVD) antennas operating bistaticly to measure the simultaneous transmission and reception of multiple polarizations. The RVD has low self clutter, low radar cross section and wideband performance. The RVD is a linearly polarized antenna, but other polarizations can be synthesized through the use of two orthogonal RVDs to transmit or receive orthogonal field components. The antenna system is able to distinguish rotationally symmetric and linear targets with its ability to transmit and receive both senses of circular polarization. For example, linear targets such as wires or pipes can be identified by even scattering of both senses of circular polarization. The RVDs in the previous RVD-based CP (circularly polarized) antenna were not designed for CP synthesis. The shape and resistive profile of the RVD were modified to improve dual CP performance. The design of the RVD was optimized through simulation to improve CP synthesis and forward gain, while maintaining low self clutter, low radar cross section, and wide bandwidth. Additional simulations demonstrate that the improvements to the RVD may help to correctly discriminate targets based on their geometries.

Citation Download Citation

James W. Sustman and Waymond R. Scott Jr. "Improved resistive-vee dipole based arbitrary polarization antenna system for ground penetrating radar", Proc. SPIE 9072, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XIX, 90720N (29 May 2014); https://doi.org/10.1117/12.2050470

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