摘要
为了检验压制噪声干扰机的性能,研究了基于实际噪声样本数据的噪声质量测定方法。通过跟踪噪声干扰技术的最新进展,深入分析Turner、Daly和Taylor提出的三种噪声质量度量方法的基本原理及各自存在的局限性,提出一种改进的噪声质量数字测定方法。该方法继承了Turner噪声质量在时域度量噪声概率密度函数高斯性科学有效的特点,加入一种新的频域噪声功率谱密度均匀性度量的罚函数,解决了Daly频域罚函数低精确性和Taylor频域罚函数的不合理性。仿真结果表明,新提出的噪声质量数字测定方法能够有效克服目前其他几种方法的缺陷,有效地测定包括数字灵巧噪声在内的各种压制干扰噪声的质量系数。
The methods of noise quality measurement based on sample data are studied for evaluating performance of oppressive jammer.After the principles and shortcomings of existing methods being analyzed thoroughly,an improved digital method of noise quality measurement is presented by tracking the latest developments of noise jamming technology.This method inherits the merit of Turner method which is good at measuring the gaussianity of PDF in time domain,and imports a new penalty function which is used for measuring the whiteness of power spectrum in frequency domain to solve the imprecision problem of Daly＇s method and the irrationality problem of Taylor＇s method.Simulation results show that the new method can overcome the shortcomings of other methods and measuring quality of various noise which include digital smart noise effectively.
出处
《航天电子对抗》
2011年第2期39-43,共5页
Aerospace Electronic Warfare
关键词
压制干扰
噪声质量
数字灵巧噪声
罚函数
oppressive jamming
noise quality
digital smart noise
penalty function
