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1.空军预警学院雷达士官学校, 湖北武汉 430019
2.空军预警学院研究生队, 湖北武汉 430019
3.空军预警学院预警技术系, 湖北武汉 430019
Received:14 April 2021,
Revised:2021-05-21,
Published:25 May 2022
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吕明久,马建朝,韦旭等.基于矩阵化原子范数的高频雷达距离-多普勒二维估计方法[J].电子学报,2022,50(05):1150-1158.
LÜ Ming-jiu,MA Jian-chao,WEI Xu,et al.Two-Dimensional Range-Doppler Estimation Method for High Frequency Radar Based on Matrix Atomic Norm[J].ACTA ELECTRONICA SINICA,2022,50(05):1150-1158.
吕明久,马建朝,韦旭等.基于矩阵化原子范数的高频雷达距离-多普勒二维估计方法[J].电子学报,2022,50(05):1150-1158. DOI: 10.12263/DZXB.20210479.
LÜ Ming-jiu,MA Jian-chao,WEI Xu,et al.Two-Dimensional Range-Doppler Estimation Method for High Frequency Radar Based on Matrix Atomic Norm[J].ACTA ELECTRONICA SINICA,2022,50(05):1150-1158. DOI: 10.12263/DZXB.20210479.
针对传统合成带宽高频雷达存在相参时间长,传统处理算法二维分辨能力弱等问题,提出一种基于矩阵化原子范数的多周期脉冲内随机稀疏步进频率信号距离-多普勒二维估计方法. 通过在每个脉冲重复时间内连续发射一串由多个载频步进子脉冲组成的脉冲序列来减少相参处理周期. 构造矩阵形式的连续原子集合,将距离-多普勒二维估计转化为矩阵形式的原子范数最小化模型,并基于半正定规划问题进行快速求解. 所提方法有效降低了运算量且实现了网格失配目标的二维高分辨. 理论分析与仿真实验验证了所提方法的有效性.
In order to solve the problems of long coherent time and weak two-dimensional resolution in traditional synthetic bandwidth high frequency radar
a two-dimensional range-Doppler estimation method based on matrix atomic norm for multi-cycle intra-pulse random sparse stepped frequency signal is proposed. Firstly
a series of pulse
which is composed of sequences multiple carriers stepped sub-pulses
has been continuously transmitted in each pulse repetition time to reduce the coherent processing period. Secondly
a continuous set of atoms in matrix form is constructed
and the two-dimensional range-Doppler estimation is transformed into a matrix form of atomic norm minimization problem. The above optimization problem is transformed into a positive semi-definite programming problem
and can be solved. The proposed method can not only effectively reduce the amount of computation
but also achieve the high resolution under the condition of off grid. Theoretical analysis and simulation experiments verify the effectiveness of the proposed method.
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