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| FSK／PSK混合调制信号多参数估计 | |
| 引用本文： | 雷雪梅,吕镜清,杨万麟,付海涛.FSK／PSK混合调制信号多参数估计[J].电子信息对抗技术,2009,24(6):9-13. |
| 作者姓名： | 雷雪梅 吕镜清 杨万麟 付海涛 |
| 作者单位： | 1. 电子科技大学电子工程学院,成都,610054;信息综合控制国家重点实验室,成都,610036 2. 信息综合控制国家重点实验室,成都,610036 3. 电子科技大学电子工程学院,成都,610054 |
| 摘 要： | 通过对FSK／PSK混合调制雷达信号脉内特征的分析，提出了一种FSK／PSK混合调制信号多参数估计方法。利用快速四阶循环累积量算法、时频脊线分析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，该方法可在较低信噪比下得到该混合调制信号的多参数高精度估计，具有较高的工程应用价值。 |
| 关 键 词： | FSK/PSK信号 循环累积量 时频脊线 小波变换 |
Multi-Parameter Estimation for Hybrid Modulated FSK/PSK Signals |
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| Authors: | LEI Xue-mei LV Jing-qin YANG Wan-lin FU Hai-tao |
| Affiliation: | LEI Xue-mei, LV Jing-qing, YANG Wan-lin, FU Hai-tao (1. School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China; 2. National Information Control Laboratory, Chengdu 610036, China) |
| Abstract: | A method of multi-parameter estimation for hybrid modulated FSK/PSK radar signal is proposed based on the analysis on the intra-pulse characteristics of hybrid modulated signal. They are used to yield accurate estimation for the hop frequencies and hop rate, which are fast 4th-order cyclic cumulants algorithm, time-frequency backbone curve analysis, and wavelet transform. The simulations show that multi-parameter of the hybrid modulated signals can be estimated accurately at low SNR, and the method has high practicability to engineering. |
| Keywords: | FSK/PSK signals cyclic-cumulant time-frequency backbone curve wavelet transform |
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