Application of Compressive Sensing to Two-Dimensional Radar Imaging Using a Frequency-Scanned Microstrip Leaky Wave Antenna

다국어 초록 (Multilingual Abstract)

The application of compressive sensing (CS) to a radar imaging system based on a frequency-scanned microstrip leaky wave antenna is investigated. First, an analytical model of the system matrix is formulated as the basis for the inversion algorithm. Then, L1-norm minimization is applied to the inverse problem to generate a range-azimuth image of the scene. Because of the antenna length, the near-field effect is considered in the CS formulation to properly image close-in targets. The resolving capability of the combined frequency-scanned antenna and CS processing is examined and compared to results based on the short-time Fourier transform and the pseudo-inverse. Both simulation and measurement data are tested to show the system performance in terms of image resolution.

목차 (Table of Contents)

• Abstract
• I. INTRODUCTION
• II. MLWA AND CS FORMULATION
• III. RESOLVING CAPABILITY STUDY
• IV. CONCLUSION
• REFERENCES

참고문헌 (Reference)

1 S. T. Yang, "Two-section half-width microstrip leaky wave antenna" 62 (62): 4988-4996, 2014

2 L. C. Potter, "Sparsity and compressed sensing in radar imaging" 98 (98): 1006-1020, 2010

3 L. Poli, "Microwave imaging within the first-order Born approximation of the contrastfield Bayesian compressive sensing" 60 (60): 2865-2879, 2012

4 E. Lagunas, "Joint wall mitigation and compressive sensing for indoor image reconstruction" 51 (51): 891-906, 2013

5 L. Zhang, "Highresolution ISAR imaging with sparse stepped-frequency waveforms" 49 (49): 4630-4651, 2011

6 N. Whitelonis, "High-resolution radar imaging through a pipe via MUSIC and compressed sensing" 61 (61): 3252-3260, 2013

7 G. M. Zelinski, "Half width leaky wave antennas" 1 (1): 341-348, 2007

8 Y. Alvarez-Lopez, "Frequency scanning based radar system" 132 : 275-206, 2012

9 EM Software & Systems Inc., "FEKO version 6.3" EM Software & Systems Inc 2013

10 S. T. Yang, "Combining a frequency-scanned antenna and a short-pulse radar for 2-D imaging" 137-138, 2014

11 L. Carin, "Coherence, compressive sensing, and random sensor arrays" 53 (53): 28-39, 2011

12 S. T. Yang, "Application of a microstrip leaky wave antenna for range-azimuth tracking of humans" 10 (10): 1384-1388, 2013

13 J. Yang, "Alternating direction algorithms for l1 problems in compressive sensing" 33 (33): 250-278, 2011

14 W. Mayer, "A novel directimaging radar sensor with frequency scanned antenna" 1941-1944, 2003