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| Beam Pattern Synthesis Optimization for Opportunistic Array Radar with Mutual Coupling |
| Gong Shu-feng① Ben De①② Pan Ming-hai① Long Wei-jun①② |
①(College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
②(Nanjing Research Institute of Electronics Technology, Nanjing 210038, China) |
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Abstract It is necessary to take mutual coupling of arrays into account in the research of array pattern synthesis for Opportunistic Array Radar (OAR) with a large number of antenna elements randomly distributed in the space. Active element patterns of a large array are constructed from those of a small array. In this paper, based on the idea of the sub-array, the large array is divided into across some sub-arrays, which can include the same elements. Building the mutual impedance matrix?of?large arbitrary array with the mutual impedance matrix?of the sub-array and combining with adaptive algorithm to realize the beam pattern synthesis optimization for OAR. The method of moment is used to calculate the generalized mutual impedance matrix of sub-arrays in this method. Last, based on maxim output signal-to-noise rate criteria, adding imaginary jammers into angle domain to adaptively change weights of the array factors for synthesizing patterns. An uniform linear array and a plane array are synthesized with the method. Calculated results agree with that with FEKO Software Simulation.
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Received: 22 January 2013
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Corresponding Authors:
Gong Shu-feng
E-mail: suffy_nuaa@163.com
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2014, Vol. 36 
