摘要
分频融合算法针对被测频率变化快的多段信号具有高精度、抗噪性好的特点,但其精度受到相位差测量结果的影响较大且实时性较差。为此,论文提出基于全相位的分频融合分层算法,采用分层算法以减少多重搜索矩阵中的冗余计算,可在不使精度受损的条件下成倍减少运算量。采用全相位法可以减少相位差测量环节的误差,相位差补偿效果得到显著改善。通过理论分析与对比实验说明,该算法对分频融合算法处理过程有较好的改进效果。
For the signal of fast change of frequency, the advantage of the points -frequency fusion algorithm is high precision and strong noise immunity, but the precision is effected by phase difference and poor real-time. So the points-frequency fusion and hierarchy algorithm based on all-phase. The hierarchy algorithm is put forward to reduce the large amount of real-time computation in the multi-loop, the computation is several times reduced without decrease precision. The all-phase spectrum analysis algorithm is put forward to decrease the error of phase difference. As shown in theoretical analysis and comparison experiments, the algorithm is increased effectively in the process of pointsfrequency fusion.
作者
杨国瑞
刘良兵
何标
李子豪
YANG Guorui LIU Liangbing HE Biao LI Zihao(Company of Postgraduate Management, LEU, Chongqing 401311 Department of Information ＆ Military Engineering,LEU,Chongqing 401311 No. 69061 Troops of PLA,Tulufan 838000)
出处
《计算机与数字工程》
2017年第9期1744-1747,共4页
Computer & Digital Engineering
基金
国家自然科学基金青年科学基金项目"频谱暗信息与信号处理负反馈函数研究"(编号:61201450)资助
关键词
分频融合
相位差
实时性
全相位
分层算法
points -frequency fusion, phase difference, real-time, all-phase, hierarchy algorithm
