| 王建文,夏春艳,王晓峰,李彪,刘宁.基于Kaiser窗函数的矢量阵近场聚焦恒定束宽方法[J].,2017,36(3):258-263 |
| 基于Kaiser窗函数的矢量阵近场聚焦恒定束宽方法 |
| Near field focused constant beamwidth method for vector array based on kaiser window function |
| 投稿时间：2016-10-18 修订日期：2017-03-30 |
| 中文摘要: |
| 本文针对宽带信号矢量阵近场聚焦的恒定束宽问题，提出了基于Kaiser窗函数改进的矢量阵近场聚焦恒定束宽方法。主要在常规Kaiser窗恒定束宽基础上，根据Kaiser窗的特点，使得窗参数随指数变化，提高了恒定束宽的计算精度及效果；利用束宽随频率的变化规律及窗函数本身特点，以低频率恒定束宽参数为先验信息，确定较高频率的恒定束宽参数，缩小了参数搜寻范围，提高了计算效率。仿真实验结果表明本文建立的恒定束宽方法具有较好的效果。 |
| 英文摘要: |
| It is proposed improved near-field focusing constant beamwidth method of vector array based on Kaiser window function,for broadband signal problem.Based on the constant beamwidth of the conventional Kaiser window, The window’s parameters are changed with the exponent according to the characteristics of the Kaiser window, The calculation accuracy and effect of constant beamwidth is improved.The variation law of beamwidth with frequency and the characteristics of window function，Which are used to reduce the parameter’s search scope. The prior knowledge of the low frequency constant beamwidth parameter is sufficient to make use of the high frequency as initial value. The computational efficiency of the algorithm is improved.The simulation experiment results show that the paper method is effective. |
| DOI：10.11684/j.issn.1000-310X.2017.03.010 |
| 中文关键词: 恒定束宽,矢量阵,窗函数 |
| 英文关键词: constant beamwidth, vector array, window function |
| 基金项目: |
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| 摘要点击次数: 2016 |
| 全文下载次数: 1301 |
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