PATTERN SYNTHESIS OF PLANAR ANTENNA ARRAY VIA CONVEX OPTIMIZATION FOR AIRBORNE FORWARD LOOKING RADAR

When airborne forward looking planar antenna is used to detect ground moving target, targets may be masked by strong clutter due to high sidelobes of the antenna pattern. In this paper, transmitting pattern is synthesized via convex optimization in order to suppress clutter from ground. Transmitting pattern has a low sidelobe illuminating short ranges and a high sidelobe focused into sky and remote ranges, which results in a relative small beamwidth in the elevation plane. In the azimuthal plane, transmitting pattern can form some notches in some fixed directions where strong clutter and interference exist. With insufficient training data due to a dispersion of clutter spectrum along range, adaptive receiving pattern with low sidelobes can be obtained by convex optimization when detecting remote targets. Simulation results show that transmitting and receiving patterns can effectively be designed via convex optimization for airborne forward looking radar.

[1]  L.E. Brennan,et al.  Theory of Adaptive Radar , 1973, IEEE Transactions on Aerospace and Electronic Systems.

[2]  Robert S. Elliott,et al.  Design of line source antennas for narrow beamwidth and asymmetric low sidelobes , 1975 .

[3]  Randy L. Haupt,et al.  Introduction to Adaptive Arrays , 1980 .

[4]  Narendra Karmarkar,et al.  A new polynomial-time algorithm for linear programming , 1984, STOC '84.

[5]  B. Carlson.  Covariance matrix estimation errors and diagonal loading in adaptive arrays , 1988 .

[6]  The Design of Narrow Beamwidth Asymmetric Sidelobe Array Antenna Patterns Using Analytic Signal Concept , 1991 .

[7]  Richard Klemm,et al.  Space-time adaptive processing : principles and applications , 1998 .

[8]  G. K. Borsari,et al.  Mitigating effects on STAP processing caused by an inclined array , 1998, Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197).

[9]  Stephen P. Boyd,et al.  Applications of second-order cone programming , 1998 .

[10]  Jos F. Sturm,et al.  A Matlab toolbox for optimization over symmetric cones , 1999 .

[11]  Yilong Lu,et al.  Adaptive wide null steering for digital beamforming array with the complex coded genetic algorithm , 2000, Proceedings 2000 IEEE International Conference on Phased Array Systems and Technology (Cat. No.00TH8510).

[12]  Zhi-Quan Luo,et al.  Robust adaptive beamforming using worst-case performance optimization: a solution to the signal mismatch problem , 2003, IEEE Trans. Signal Process..

[13]  Marc Van Droogenbroeck,et al.  New methods for handling the range dependence of the clutter spectrum in non-sidelooking monostatic STAP radars , 2003, 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)..

[14]  Jian Li,et al.  On robust Capon beamforming and diagonal loading , 2003, 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)..

[15]  K. M. Wong,et al.  Adaptive beamforming with sidelobe control: a second-order cone programming approach , 2003, IEEE Signal Processing Letters.

[16]  E. Soliman,et al.  Optimization and Characterization of Electromagnetically Coupled Patch Antennas using RBF Neural Networks , 2006 .

[17]  Yong-Chang Jiao,et al.  Synthesis of Circular Antenna Array Using Crossed Particle Swarm Optimization Algorithm , 2006 .

[18]  Moctar Mouhamadou,et al.  SMART ANTENNA ARRAY PATTERNS SYNTHESIS: NULL STEERING AND MULTI-USER BEAMFORMING BY PHASE CONTROL , 2006 .

[19]  A. Akdagli,et al.  Clonal Selection Algorithm for Design of Reconfigurable Antenna Array with Discrete Phase Shifters , 2007 .

[20]  K. Guney,et al.  Amplitude-Only Pattern Nulling of Linear Antenna Arrays with the Use of Bees Algorithm , 2007 .

[21]  G. K. Mahanti,et al.  Design of Fully Digital Controlled Reconfigurable Array Antennas with Fixed Dynamic Range Ratio , 2007 .

[22]  Korany R. Mahmoud,et al.  A Comparison Between Circular and Hexagonal Array Geometries for Smart Antenna Systems Using Particle Swarm Optimization Algorithm , 2007 .

[23]  X.-W. Shi,et al.  Optimized Design of Ideal and Actual Transformer Based on Improved Micro-Genetic Algorithm , 2007 .

[24]  Kerim Guney,et al.  A CLONAL SELECTION ALGORITHM FOR ARRAY PATTERN NULLING BY CONTROLLING THE POSITIONS OF SELECTED ELEMENTS , 2008 .

[25]  Paolo Rocca,et al.  An Effective Excitation Matching Method for the Synthesis of Optimal Compromises Between Sum and Difference Patterns in Planar Arrays , 2008 .