一种改进的复延迟时频分布算法

doi:10.3969/j.issn.1001-2400.2016.05.007

西安电子科技大学学报

一种改进的复延迟时频分布算法

江莉1,2;赵国庆1;李林1

(1. 西安电子科技大学电子工程学院，陕西西安 710071;
2. 西安建筑科技大学信息与控制工程学院，陕西西安 710055)

收稿日期:2015-09-07 出版日期:2016-10-20 发布日期:2016-12-02
通讯作者: 江莉
作者简介:江莉(1982-)，女，西安电子科技大学博士研究生，E-mail：yolanda_jiangli@163.com．
基金资助:
国家自然科学基金资助项目(61201287)；中央高校基本科研业务费专项资金资助项目(JB140208)；陕西省教育厅专项科研计划资助项目(16JK1429)

Modified algorithm for complex-time distribution

JIANG Li1,2;ZHAO Guoqing1;LI Lin1

(1. School of Electronic Engineering, Xidian Univ., Xi'an 710071, China;
2. School of Information and Control Engineering, Xi'an Univ. of Architecture and Technology, Xi'an 710055, China)

Received:2015-09-07 Online:2016-10-20 Published:2016-12-02
Contact: JIANG Li

摘要/Abstract

摘要：

针对计算复延迟信号时存在计算机精度不够、甚至溢出的问题，提出了一种改进算法．该算法通过频谱递推估计和信号尺度变换，有效解决了复延迟时频分布的算法实现问题．仿真实验表明，改进算法相比原始算法具有较好的噪声抑制能力和时频能量聚集性．

关键词: 复延迟时频分布, 复延迟信号, 时频能量聚集性

Abstract:

Aiming at the problems of computer precision and even overflow, a new modified algorithm is proposed. The complex-time distribution algorithm can be accomplished effectively by frequency spectrum iteration estimation and signal scale conversion. Simulation results show that the proposed method has a good ability to suppress the influence of noise interferences, improve the energy convergence, and provide theoretical and technical support for the enginnering application.

Key words: complex-time distribution, complex-lag signal, time frequency energy concentration

江莉;赵国庆;李林. 一种改进的复延迟时频分布算法[J]. 西安电子科技大学学报, 2016, 43(5): 36-40.

JIANG Li;ZHAO Guoqing;LI Lin. Modified algorithm for complex-time distribution[J]. Journal of Xidian University, 2016, 43(5): 36-40.

参考文献

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一种改进的复延迟时频分布算法

Modified algorithm for complex-time distribution

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