Keywords :
Ambiguity function (AF); beampattern design; multiple-input–multiple-output (MIMO) radar; sequence set design; spectrum shaping; successive convex approximation (SCA); Ambiguity function; Beam pattern; Beampattern design; Dimensional properties; Multi dimensional; Sequence set; Sequence set design; Set design; Spectrum shaping; Successive convex approximations; Aerospace Engineering; Electrical and Electronic Engineering; Frequency-domain analysis; Clutter; MIMO radar; Optimization; Iterative methods; Design methodology; Aerospace and electronic systems; Vectors; Signal to noise ratio; Sensors
Abstract :
[en] Designing a transmit sequence set with desired multidimensional properties can enhance target sensing performance but increases the complexity of problem. In this article, we focus on a designing transmit sequence set in multiple-input–multiple-output radar to obtain desired properties in multiple dimensions. Specifically, a multiconstrained optimization model is formulated, which takes into account the performance in the range-Doppler, spatial, and frequency dimensions. In order to solve the high-order, fractional, and nonconvex resulting problem, an algorithm based on successive convex approximation (SCA) is proposed, in which each iteration contains semidefinite programming and eigenvalue decomposition. To expedite the iterative convergence, an SCA-acceleration strategy is introduced, which utilizes the square accelerated iteration method in multiconstrained conditions. Finally, numerical experiments validate the superiority of the proposed algorithm over State-of-the-Art methods. Simultaneously, multidimensional joint shaping experiments are conducted to investigate the tradeoff between the sidelobe performance of the ambiguity function and the beampattern.
Funding text :
This work was supported in part by the National Natural Science Foundation of China under Grant 61871384, in part by the Science Fund for Distinguished Young Scholars of Hunan Province under Grant 2024JJ2066, and in part by the Science and Technology Innovation Program of Hunan Province under Grant 2022RC1092.
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