Simulated Imaging Performance of UWB SAR Based on OFDM

This paper concerns initial simulation study of an imaging radar system employing frequency division multiplexing as means of generating radar pulses. General architecture of OFDM communication system with realistic parameters was adopted and then modified to be used for synthetic aperture radar modeling. Arbitrary target function consisting of several point scatterers was used to test system's ability to produce imagery. At the conclusion of the study it was found that UWB OFDM imaging radar does, indeed, present certain benefits, such as dynamic spectrum allocation, anti-jamming potential through pulse diversity, possibility for dual use as a communication system-while also having a potential to produce high-resolution target images on par with other pulse-based UWB radars

[1]  N. Levanon Multifrequency complementary phase-coded radar signal , 2000 .

[2]  Hong Gu,et al.  Random signal radar - a winner in both the military and civilian operating environments , 2003 .

[3]  Zeev Zalevsky,et al.  Hybrid optical-RF system for generating an improved linear frequency modulated pulses for radar applications , 2000, Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037].

[4]  E.R. Brown,et al.  Integrated radar and communications based on chirped spread-spectrum techniques , 2003, IEEE MTT-S International Microwave Symposium Digest, 2003.

[5]  Lutz H.-J. Lampe,et al.  Performance analysis of multiband OFDM for UWB communication , 2005, IEEE International Conference on Communications, 2005. ICC 2005. 2005.

[6]  D. J. Fouts,et al.  A single-chip false target radar image generator for countering wideband imaging radars , 2002, IEEE J. Solid State Circuits.

[7]  P. Daponte,et al.  ADC parameters and characteristics , 2005, IEEE Instrumentation & Measurement Magazine.

[8]  Marco Luise,et al.  Low-complexity blind carrier frequency recovery for OFDM signals over frequency-selective radio channels , 2002, IEEE Trans. Commun..

[9]  Lawrence Carin,et al.  Ultra-wideband, short-pulse ground-penetrating radar: simulation and measurement , 1997, IEEE Trans. Geosci. Remote. Sens..

[10]  Mehrdad Soumekh,et al.  Reconnaissance with ultra wideband UHF synthetic aperture radar , 1995, IEEE Signal Process. Mag..

[11]  A.E. Fathy,et al.  See-through-wall imaging using ultra wideband short-pulse radar system , 2005, 2005 IEEE Antennas and Propagation Society International Symposium.

[12]  Sune R. J. Axelsson Noise radar using random phase and frequency modulation , 2004, IEEE Transactions on Geoscience and Remote Sensing.

[13]  Mehrdad Soumekh,et al.  Synthetic Aperture Radar Signal Processing with MATLAB Algorithms , 1999 .

[14]  G.R. Aiello,et al.  Design of a multiband OFDM system for realistic UWB channel environments , 2004, IEEE Transactions on Microwave Theory and Techniques.