递归时频重排算法在跳频信号参数估计中的应用  

Application of Recursive Time-Frequency Reassignment Method to Frequency Hopping Signals Analysis

作　　者：蔡丽霞[1] 

机构地区：[1]河南工业职业技术学院,南阳473000

出　　处：《计算机系统应用》2014年第1期154-157,123,共5页Computer Systems & Applications

摘　　要：为了有效分析跳频信号并估计其参数,引入一种短时傅里叶变换的快速算法,为改善其时频聚集性,将该算法推广到重排域.该算法降低了参数估计的算法复杂度.最后,在跳频系统中对该算法的性能进行了仿真与分析.To make an analysis and estimate the parameters of frequency-hopping signal, a fast algorithm to realize short time fourier transform is introduced. In order to improve the time-frequency concentration, the proposed algorithm is extended with the method known as time-frequency reassignment. The algorithm reduces complexity of parameter estimation. Finally, the algorithm performance is simulated and analyzed.

关 键 词：跳频 傅里叶变换 短时傅里叶变换 时频重排 

分 类 号：TN914.41[电子电信—通信与信息系统]