Directional diagram reconfigurable bare cloth linear array synthesizing method

Abstract

The invention relates to a directional diagram reconfigurable bare cloth linear array synthesizing method. The method comprises the following steps: constructing a virtual oversampling uniformly-spaced linear array; determining an element position vector d of the virtual oversampling uniformly-spaced linear array; determining an excitation array vector w(q) corresponding the q-th reconfigurable directional diagram of the virtual oversampling uniformly-spaced linear array and an excitation matrix consisting of Q excitation array vectors according to the element position vector d of the virtual oversampling uniformly-spaced linear array; determining the guiding vector a(theta) of the virtual oversampling uniformly-spaced linear array; according to a joint sparse recovery theory, establishing a convex optimization model synthesizing Q directional diagrams by using the hybrid l2 / l1 norm of a minimum excitation matrix as a optimal object and using the design requirement of the Q directional diagrams as a constraint condition; using a convex optimization algorithm to solve the convex optimization model, working out the excitation matrix W, and determining the number of array elements, the positions of the array elements and Q array excitation groups corresponding to the Q reconfigurable directional diagrams.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for synthesizing sparse linear arrays with reconfigurable directional diagrams. Background technique [0002] In recent years, reconfigurable array antennas have been widely used in the fields of radar, remote sensing, spacecraft, and wireless communications because they can achieve multiple patterns only by changing the excitation of the array elements (reference [1]: A.F.Morabito, A. . Massa, P. Rocca, and T. Isernia, "An effective approach to the synthesis of phase-only reconfigurable linear arrays," IEEE Trans. Antennas Propagat., vol.60, no.8, pp.3622-3631, Aug. 2012). As we all know, the non-uniform arrangement of the array element position can effectively save the number of array elements, which is beneficial to reduce the overall weight of the array antenna, simplify the feed network and reduce the cost and cost of the application system (reference [2]: X.Z...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the need to use multiple known reference patterns as the prior information of the algorithm in the prior art, which cannot be applied only based on the expected multiple pattern envelopes, that is, multiple main beamforming and common The sidelobe level requirements are used to synthesize the defects of the reconfigurable sparse linear array, thus providing a more general and practical sparse linear array synthesis method

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