In this paper , in order to achieve better correlation result , the nonlinear processing of joint transform power spectrum ( jtps ) is put forward 为了得到更好的相关结果，本文提出对联合功率谱进行非线性处理的方法。
The functions of statistic analysis , data filtering , fft transition , power spectrum analysis , correlation analysis and etc are realized in the software 可以实现对数据的统计分析、滤波、 fft变换、功率谱分析、相关分析等。
The cumulation of tdfcsd in a certain period eliminates the remainder noise more , and the ability of detecting signal ' s frequency is improved 通过对某段时间得到的功率谱密度累积，进一步改善snr ,提高信号频率的检测能力。
It is necessary for modern signal process system to have capability to deal with complex signals and to represent them from different aspect 从外部获取的信息是模拟量时，信息处理是从中提取信号时间域特征、频域功率谱特征等参数。
( 2 ) in the " hard " nonlinear regime , the radiation field is characterized by non - period of the field in time and the continuous power spectrum ( 2 )在“硬”非线性区域，场的混沌振荡态是连续出现的，其特征是输出功率谱是连续谱。
The paper analyses the signal processing with emphasis on signal to noise ratio ( snr ) in output of correlator and snr in signal power spectral density 并对算法处理中相关器输出中的信噪比（ snr ）和功率谱密度中的snr进行了重点分析。
In the end of this chapter , the power spectrum density ( psd ) analysis of hrg is given , which shows that the main noise of hrg is low frequency noise 论文还对陀螺信号进行了功率谱密度分析,分析结果表明陀螺的主要误差都集中在低频段。
At last , the validity and the superiority of boundary - spectrum are improved by contrasting with power spectrum density ( psd ) to analyze tested data 同时通过实验信号的局域波边界谱和功率谱分析比较，突出了局域波边界谱分析的可行性和优点。
Simulation results show that the proposed clutter generation method can generate the clutters having the desired amplitude distribution and spectrum property 仿真结果表明，所提出的杂波产生方法能够产生满足要求的幅度分布和功率谱特性的杂波。
First , the return signal model is set up . the target return signal , clutter which has gauss power spectrum and noise of the receiver are included 首先讨论回波信号的生成，包括斯威林模型目标回波信号，接收机噪声以及具有高斯功率谱的杂波模型。
