【摘要】 回顾了常见的抗截获技术的发展,并对抗截获技术按照时、频、码、能等进行了分类,分析讨论常见的抗截获技术的优势和存在的问题,重点针对变换域的抗截获技术进行分析。变换域抗截获技术主要是利用变换域信号的参数动态变化提高抗截获性能,对加权分数傅里叶变换的发展历程从理论和应用两方面进行了总结回顾,给出了基于加权变换域的抗截获系统框架,针对变换域的抗截获技术进行星座图仿真和参数扫描误差分析,验证了其抗截获性能的优势。更多还原

【Abstract】 In this paper,the classical anti-interception technologies are reviewed firstly. These anti-interception technologies are divided based on time,frequency,code and power domains.Furthermore,the superiority and drawback of the common anti-interception technologies are discussed.At last,the anti-interception technology based on novel transform domain is emphatically analyzed,which is based upon the weighted type fractional Fourier transform( WFRFT).And it employs the dynamical changing of transform parameters to improve the performance of anti-interception.Firstly,the development history of WFRFT from theory and application is summarized.And then,the anti-interception system framework based WFRFT is provided. At last,through the numerical simulations on the constellation diagram distinguishing and the analysis of parameter scanning error,the performance of anti-interception based on WFRFT is verified.更多还原