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| FH/PSK混合调制扩频信号参数估计 | |
| 引用本文： | 雷雪梅,杨万麟,吕镜清.FH/PSK混合调制扩频信号参数估计[J].火控雷达技术,2009,38(4):40-44. |
| 作者姓名： | 雷雪梅 杨万麟 吕镜清 |
| 作者单位： | 1. 电子科技大学,成都,610054;信息综合控制国家重点实验室,成都,610036 2. 电子科技大学,成都,610054 3. 信息综合控制国家重点实验室,成都,610036 |
| 摘 要： | 针对混合调制信号参数难以估计的问题,本文通过对FH/PSK混合调制扩频信号特征的分析,提出了一种FH/PSK混合调制扩频信号参数估计方法。利用时频脊线分析、跳频分量数估计、快速四阶循环累积量算法与小波变换相结合的方法,实现了跳频频率和码速率等参数的高精度估计。仿真表明,本文方法可在较低信噪比下得到该混合调制扩频信号多个参数的高精度估计,具有较高的工程应用价值。 |
| 关 键 词： | FH/PSK信号 时频脊线 循环累积量 小波变换 |
Parameter Estimation for FH/PSK Hybrid Modulated Spread Spectrum Signals |
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| Lei Xuemei,Yang Wanlin,Lv Jingqing.Parameter Estimation for FH/PSK Hybrid Modulated Spread Spectrum Signals[J].Fire Control Radar Technology,2009,38(4):40-44. | |
| Authors: | Lei Xuemei Yang Wanlin Lv Jingqing |
| Affiliation: | Lei Xuemei, Yang Wanlin , Lv Jingqing (1. University of Electronic Science and Technology of China, Chengdu 610054; 2. National Information Integrative Control Key Laboratory, Chengdu 610036) |
| Abstract: | To the problem that it is difficulty to estimate the parameters of the modulated hybrid signal, a method for estimating parameters of the FH/PSK hybrid modulated spread spectrum signal is proposed based on analysis of its signal characteristics. The parameters such as frequency hopping and code rate are highly accurate estimated by using the time-frequency ridge analysis, frequency-hopping component estimation and fast 4th-order cyclic cumula- nts algorithm as well as the wavelet transform. The simulations prove that using this method can obtain the highly accurate estimation of multiple parameters of the hybrid modulated spread spectrum signal in smaller SNR condition, and this method has highly applicable value in projects. |
| Keywords: | FH/PSK signal time-frequency ridge cyclic-cumulants wavelet transform |
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