| 摘要: |
| 以往的阵列发射波束调控技术研究大多致力于解决发射波束的高增益和低旁瓣问题。然而随着智能干扰机技术和反辐射技术的不断发展,阵列发射波束更加容易被对方侦察感知,这就使得雷达系统的战场生存问题愈发突出。为了充分利用阵列发射功率并提高阵列雷达的反侦察能力,本文提出了一种基于凸优化理论的双极化阵列发射波束唯相调控方法。该方法通过约束水平和垂直极化阵的方向图的幅度和相位,生成具有特定极化状态的高增益主瓣波束和极化域-空域旁瓣零陷,从而在降低干扰区域发射功率的同时使得主瓣畸变较小。在数值仿真中,本文方法将唯相位约束中的非凸问题通过泰勒展开转换为凸优化问题后进行求解。仿真结果说明了本文方法的正确性。 |
| 关键词: 双极化阵列 凸优化 唯相位波束生成 反侦察 |
| DOI： |
| 分类号:TN973.2 |
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| Technique for Phase-only Management of Dual-Polarized Array Transmitting Beams Utilizing Convex Optimization |
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| Abstract: |
| Historically, research on array beamforming technology has primarily concentrated on addressing the challenges of achieving high gain and minimizing sidelobes for the transmitting beam. However, as smart jamming and anti-radiation technologies continue to advance, array beams are becoming more vulnerable to detection by enemies, highlighting the importance of radar systems" survivability in combat situations. To optimize the transmitting power of array beams and improve the anti-detection capabilities of array radars, this paper introduces a method for controlling the phase of dual-polarized array beams using convex optimization theory. This technique produces main lobe beam with high gain that has the designated polarization state and sidelobe nulls in the polarization-space joint domain. This is achieved by controlling the pattern amplitudes and phases of the horizontal and vertical arrays, which minimizes main lobe distortion and decreases transmitting power in areas of interferences. In numerical simulations, the non-convex problem associated with phase-only constraints is reformulated into a convex optimization problem via Taylor expansion. The simulation results demonstrate the correctness of the proposed method. |
| Key words: dual-polarized array, convex optimization, phase-only beamforming, counter-reconnaissance |