VHF Antennas on Unmanned Air Vehicles (UAV) for a Simplified Synthetic Aperture Radar (SAR)
T. Yang and W. A. Davis
Virginia Polytechnic Institute and State University, VA, USA
VHF antennas on unmanned autonomous vehicles (UAV) to locate a target are investigated. Theoretical limitations of antenna size related to the footprint of a UAV are briefly discussed, suggesting that perhaps a phased-array antenna may not be the best solution for target location from a UAV. A log-periodic antenna design is presented for a UAV. Conventional SAR and a new simplified approach using a-priori phase information of the synthesized array are implemented to evaluate the performance of the designed antenna. A scenario for locating a wire target is demonstrated using both the conventional and the new simplified SAR through simulations. The simulated results show that the new simplified SAR is both simple and accurate for locating a target as long as the phase of the SAR signal can be successfully unwrapped, offering a viable alternative to conventional SAR processing.
27th Annual Review of Progress in Applied Computational Electromagnetics
2011
March
330-335
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