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引用本文：

刘歌,张旭洲,汪洪艳.基于AR功率谱和ZAM变换的FSK-BPSK复合信号参数估计[J].电讯技术，2017，57（4）： - . [点击复制]
LIU Ge,ZHANG Xuzhou,WANG Hongyan.Parameter estimation of FSK-BPSK hybrid modulation signal based on AR power spectrum and ZAM transform[J].，2017，57（4）： - . [点击复制]

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基于AR功率谱和ZAM变换的FSK-BPSK复合信号参数估计
刘歌,张旭洲,汪洪艳
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(空军航空大学信息对抗系，长春 130022)

摘要:

为了解决频率编码-二相编码(FSK-BPSK)复合调制信号参数估计精度低的问题，提出利用自回归(AR)模型功率谱估计联合ZAM（Zhao,Atlas,and Marks）变换的方法。首先，利用AR模型功率谱估计方法对信号相位不敏感的特点，对FSK-BPSK复合调制信号的跳频分量数以及跳频码元序列进行估计；然后，利用ZAM分布对相位变化极其敏感的特点，提取信号ZAM分布的各跳频频率下的截面，对相位编码的码元宽度和跳频码元宽度进行估计。仿真实验表明，在全频段信噪比不小于0 dB时，AR模型功率谱联合ZAM变换的方法能够精确地估计出该复合信号的各参数。

关键词: 复合调制信号参数估计自回归模型功率谱 ZAM变换

DOI：

基金项目:

Parameter estimation of FSK-BPSK hybrid modulation signal based on AR power spectrum and ZAM transform

LIU Ge,ZHANG Xuzhou,WANG Hongyan

()

Abstract:

In order to solve the low accuracy problem of parameter estimation of Frequency Shift Keying-Binary Phase Shift Keying(FSK-BPSK) hybrid modulation signals,a method combining autoregressive model(AR) power spectrum with Zhao,Atlas,and Marks(ZAM) distribution is proposed. First,by using the feature that the AR power spectrum is not sensitive to the phase of the signal,the component numbers of the hopping frequency and hopping frequency sequence of FSK-BPSK signal are estimated by AR power spectrum.Then,by using the feature that the ZAM distribution is extremely sensitive to the phase changing,the phase-coded code width and frequency hopping code width are extracted by the ZAM transform. Simulation results show that the parameters of the signal can be estimated precisely when the signal-to-noise ratio(SNR) is not less than0 dB.

Key words: hybrid modulation signal parameter estimation autoregressive model(AR) power spectrum ZAM transform