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arXiv 1612.08023cs.ITmath.ITphysics.data-an
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降低自相关函数旁瓣电平的非线性FM波形设计

Nonlinear FM Waveform Design to Reduction of sidelobe level in Autocorrelation Function

Roohollah Ghavamirad, Hossein Babashah, Mohammad Ali Sebt

摘要:

本文将针对切比雪夫、凯泽、泰勒和升余弦功率谱密度设计非线性调频信号。分析了这四种窗函数下峰值旁瓣电平随主瓣宽度的变化规律。研究表明,降低非线性调频信号的旁瓣电平,可以增加自相关函数的主瓣宽度。此外,功率谱密度从模拟得到的结果和所需的PSD进行了比较。最后,给出了不同峰值旁瓣电平下仿真PSD与期望PSD的误差百分比。固定相位概念是该误差的可能来源。

英文摘要:

This paper will design non-linear frequency modulation (NLFM) signal for Chebyshev, Kaiser, Taylor, and raised-cosine power spectral densities (PSDs). Then, the variation of peak sidelobe level with regard to mainlobe width for these four different window functions are analyzed. It has been demonstrated that reduction of sidelobe level in NLFM signal can lead to increase in mainlobe width of autocorrelation function. Furthermore, the results of power spectral density obtained from the simulation and the desired PSD are compared. Finally, error percentage between simulated PSD and desired PSD for different peak sidelobe level are illustrated. The stationary phase concept is the possible source for this error.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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