Volume 22, Issue 2, April 2016, Pages 283–292
S. Sankaranarayan1, M. Anto Bennet2, K. Vaishally3, E. Haripriya4, and S. Sathya Subbu Lakshmi5
1 Assistant Professor, Department of Electronics and Communication Engineering, VELTECH, Chennai-600062, India
2 Professor, Department of Electronics and Communication Engineering, VELTECH, Chennai-600062, India
3 UG Student, Department of Electronics and Communication Engineering, VELTECH, Chennai-600062, India
4 UG Student, Department of Electronics and Communication Engineering, VELTECH, Chennai-600062, India
5 UG Student, Department of Electronics and Communication Engineering, VELTECH, Chennai-600062, India
Original language: English
Copyright © 2016 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This paper describes the feasibility and implementation of a time domain facility for Radar Cross Section (RCS) measurements. Main advantages of measuring in the time domain are the high range resolution and the application of direct gating. The limited signal to noise ratio can be a disadvantage. The measurements have been performed with software tool XFDTD using two 2-12 GHz ridged horn antennas and rugby antennas respectively. Because the horns are not designed for transmitting transient signals, an additional system response measurement in combination with a software de convolution algorithm restores the impulse response of the object under test. Further processing separates the object response from clutter contributions. A comparison of the time domain data with calculated and measured frequency domain radar cross sections shows a good agreement. The high range resolution enables the separation of scattering mechanisms (i.e. reaction, single and multiple diffraction. It is concluded that the time domain RCS measurement system is an attractive alternative of its frequency domain equivalent. However, the decision to measure in the time or frequency domain will depend on the specific aim of each experiment.
Author Keywords: Radar Cross Section (RCS), Perfect Electric Conductor (PEC), De convolution.
S. Sankaranarayan1, M. Anto Bennet2, K. Vaishally3, E. Haripriya4, and S. Sathya Subbu Lakshmi5
1 Assistant Professor, Department of Electronics and Communication Engineering, VELTECH, Chennai-600062, India
2 Professor, Department of Electronics and Communication Engineering, VELTECH, Chennai-600062, India
3 UG Student, Department of Electronics and Communication Engineering, VELTECH, Chennai-600062, India
4 UG Student, Department of Electronics and Communication Engineering, VELTECH, Chennai-600062, India
5 UG Student, Department of Electronics and Communication Engineering, VELTECH, Chennai-600062, India
Original language: English
Copyright © 2016 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This paper describes the feasibility and implementation of a time domain facility for Radar Cross Section (RCS) measurements. Main advantages of measuring in the time domain are the high range resolution and the application of direct gating. The limited signal to noise ratio can be a disadvantage. The measurements have been performed with software tool XFDTD using two 2-12 GHz ridged horn antennas and rugby antennas respectively. Because the horns are not designed for transmitting transient signals, an additional system response measurement in combination with a software de convolution algorithm restores the impulse response of the object under test. Further processing separates the object response from clutter contributions. A comparison of the time domain data with calculated and measured frequency domain radar cross sections shows a good agreement. The high range resolution enables the separation of scattering mechanisms (i.e. reaction, single and multiple diffraction. It is concluded that the time domain RCS measurement system is an attractive alternative of its frequency domain equivalent. However, the decision to measure in the time or frequency domain will depend on the specific aim of each experiment.
Author Keywords: Radar Cross Section (RCS), Perfect Electric Conductor (PEC), De convolution.
How to Cite this Article
S. Sankaranarayan, M. Anto Bennet, K. Vaishally, E. Haripriya, and S. Sathya Subbu Lakshmi, “Performance & Analysis of Radar Cross Section Estimation of Simple Objects in Time Domain,” International Journal of Innovation and Scientific Research, vol. 22, no. 2, pp. 283–292, April 2016.
