研究提取能够反映雷达信号本征信息的脉内特征参数作为常规五大参数的有效补充,是解决当前新体制雷达信号分选识别难的有效手段。提出了一种基于分数阶Fourier变换的雷达辐射源分选识别算法,该方法利用不同信号在分数阶域波形的差别,提取出三组对称Holder系数值构成联合特征向量,实现对雷达信号的自动分选识别。仿真实验结果表明,信噪比大于4 d B时,对六种雷达信号的整体平均识别成功率优于96. 5%,信
A simplified supramolecule MgCl2·6(H2O) is used to investigate the dehydration process of bischofite crystal. The molecular structure is constructed from t
With the aid of the molecular orbital DMol3 program,the energetics and electronic structures of several AlnC(n = 2-7) configurations have been searched and calc