关键词: 阵列综合, 稀疏, 加权L1范数, 线阵

Abstract: To tackle the problem that the weight, size and cost of antennas are limited in some applications, such as phased array radar, satellite communication and MIMO radar system, a new method for sparse array synthesis based on the iterative weighted [L1] norm is proposed. By analyzing the theoretical model based on the sparse array synthesis, a weighted [L1] norm is employed to replace the [L0] norm to avoid the NP-hard problem. Then a sparse array is obtained via calculating the array current figured out by complex derivative in combination with heuristic approach, meanwhile the beam pattern approximates the desired one. Experimental results show that the proposed method can achieve sparser array with shorter array aperture under the constraints of radiation characteristics compared with some existing sparse array synthesis algorithms.

Key words: array synthesis, sparse, weighted L1 norm, linear array