CAJ | 학술논문

该文针对几种伪随机码调制脉冲串信号，包括伪随机二相编码(PRBC)脉冲串信号、伪随机脉位调制(PPM)脉冲串信号及伪随机脉位调制与伪随机二相编码复合(PRBC-PPM)脉冲串信号，为解决单通道多分量情况下的信号分离和参数提取问题，提出基于奇异值比谱和周期积累的载频及伪码波形估计方法。通过构建奇异值比谱估计广义周期并完成周期积累，再取平方进行FFT变换，并以去载频处理后信号的实部累加和为衡量标准，精确估计出载频并完成脉位波形估计。最后通过内积计算估计出幅度和初始相位。仿真与分析说明该文方法在不同信噪比下的有效性。
해문침대궤충위수궤마조제맥충천신호，포괄위수궤이상편마(PRBC)맥충천신호、위수궤맥위조제(PPM)맥충천신호급위수궤맥위조제여위수궤이상편마복합(PRBC-PPM)맥충천신호，위해결단통도다분량정황하적신호분리화삼수제취문제，제출기우기이치비보화주기적루적재빈급위마파형고계방법。통과구건기이치비보고계엄의주기병완성주기적루，재취평방진행FFT변환，병이거재빈처리후신호적실부루가화위형량표준，정학고계출재빈병완성맥위파형고계。최후통과내적계산고계출폭도화초시상위。방진여분석설명해문방법재불동신조비하적유효성。
For the several kinds of pseudo-random code modulated pulse trains-the Pseudo-Random Binary Code (PRBC) pulse train, including the Pulse Position Modulation (PPM) pulse train, the Pseudo-Random Binary Code and Pulse Position Modulation (PRBC-PPM) pulse train, in order to solve the problem of single channel source separation and parameters estimation of multi-component signal, an estimation method of carrier frequency and pseudo-random code based on Singular Value Ratio (SVR) spectrum and cycle accumulation is proposed. The generalized period can be estimated through SVR spectrum firstly, after that the interference of the noise can be reduced by cycle accumulating, Fast Fourier Transformation (FFT) is used to analyze the squared signal, and the exact value of carrier frequency and the pulse position can be obtain by measuring the sum value of the real part of the signal which removed carrier frequency. At last, the amplitude and the initial phase can be determined by calculating the inner product. The simulation results prove that the proposed method is effective in different SNRs.