Journal of Shanghai Jiaotong University ›› 2014, Vol. 48 ›› Issue (03): 372-376.

• Radiao Electronics, Telecommunication Technology • Previous Articles     Next Articles

Multi-objective Unequally-Spaced Array Synthesis Based on Modified Cross Entropy Algorithm

BIAN Li,CHE Xiangqian,ZHANG Shaoqing
  

  1. (School of Electronic and Information Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China)
  • Received:2013-03-26 Online:2014-03-28 Published:2014-03-28

Abstract:

The modified cross entropy algorithm and the program flow were proposed based on the combination of fuzzy C mean clustering algorithm and traditional cross entropy algorithm. This algorithm was successfully used in unequallyspaced arrays synthesis, whose number of array element are respectively 6, 8, 10, and 12, and solved the multiobjective optimization problems of the peak sidelobe level and beam width in the field of unequallyspaced array synthesis. In the corresponding cases, the balance curves to peak sidelobe level and beam width of unequallyspaced arrays were proposed.Optimization shows that, given the beam width and the number of unequallyspaced array elements,  the peak sidelobe level of unequallyspaced array was decreased by nearly 30% compared with equallyspaced array. In the uniform array beyond the cutoff distance, the algorithm more efficiently and accurately found tradeoff to peak sidelobe and beamwidth.
 

Key words: array synthesis, unequally-spaced array, modified cross entropy algorithm

CLC Number: