干扰子空间正交投影快速零陷跟踪波束赋形算法

马晓峰; 陆乐; 盛卫星; 韩玉兵; 张仁李

doi:10.11999/JEIT151438

干扰子空间正交投影快速零陷跟踪波束赋形算法

doi: 10.11999/JEIT151438

基金项目:

国家自然科学基金(61501240, 11273017)，上海航天基金重点项目(SAST201437)

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出版历程
- 收稿日期: 2015-12-17
- 修回日期: 2016-05-16
- 刊出日期: 2016-10-19

Fast Nulls Tracking Pattern Synthesis Based on Jammer Subspace Orthogonal Projection

Funds:

The National Natural Science Foundation of China (61501240, 11273017), The Key Project of Shanghai Aerospace Foundation of China (SAST201437)

摘要

摘要: 该文针对LEO星载阵列天线抑制角度动态变化的有源干扰的需要，提出一种干扰子空间正交投影的快速零陷跟踪波束赋形优化算法。算法采用干扰子空间动态更新与迭代正交投影，不断快速修正零陷位置，并通过迭代傅里叶变换(IFT)技术进行优化加速。所提出的快速算法在整个干扰零陷跟踪过程中，具有稳健和精确的控制方向图主瓣赋形区形状和阵元电流激励系数动态范围的能力，同时具备自适应最小化方向图旁瓣电平的能力，适用于星载系统在线实时计算。仿真实验验证了算法的快速性、有效性和稳健性。
- 低轨道卫星通信 /
- 快速波束赋形 /
- 抗干扰零陷 /
- 快速傅里叶变换
Abstract: A fast nulls tracking pattern synthesis algorithm based on jammer subspace orthogonal projection is proposed, which can suppress the dynamic active jamming for LEO spaceborne array antenna. The algorithm corrects the nulls positions of radiation pattern synchronously through dynamically jammer subspace updating and iterative orthogonal projection, while the Iterative Fourier Transform (IFT) technique?is adopted to accelerate the correction. The proposed algorithm can maintain the mainlobe region and control the dynamic range ratio of excitations robustly and precisely, while minimizing the pattern sidelobe adaptively, so it is suitable for online real-time calculation in spaceborne array antenna. Simulation results verify the rapidity, effectiveness, and robustness of the proposed algorithm.
- Low Earth Orbit (LEO) satellite communication /
- Fast pattern synthesis /
- Anti-jamming nulls /
- Fast Fourier Transform (FFT)

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参考文献(22)

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