| 1. | The second order circuit stimulated by sine signal
正弦信号激励下的二阶电路 |
| 2. | The detection of weak sine signals using special chaotic system
微弱正弦信号的一种新的混沌检测系统 |
| 3. | Sampling theorem for band - limited low - pass signal with disturbance from a sine signal
正弦信号干扰下低通带限型频谱信号的采样 |
| 4. | The main purpose of this thesis is to try to detect weak sine signal embedded in chaos
本文研究的目的是检测混沌噪声背景中的微弱正弦信号。 |
| 5. | The principle of utilizing digital correlation method to detect the phases of the two sine signals with the same frequency was discussed
介绍了采用相关分析法测量两路同频率正弦信号相位的数字化方法基本原理。 |
| 6. | Because frequency - shift signal is a kind of modulation signal , it ' s waveform is two ac sine signal of alternating i . e . upper frequency and lower frequency which was generated by low frequency modulating middle frequency
由于移频信号是一种调频信号，其波形为低频信号调制中心载频信号后产生的低端载频（下边频）和高端载频（上边频）两个交替变化的正弦交流信号。 |
| 7. | The purpose of subject is to achieve the phase difference measurement of two 50 hz sine signals . based on the further analysis about all kinds of phase measurement system , the research of phase measurement system for 50 hz sine signals is made in the paper
本课题是以实现两路工频正弦信号的相位测量为目的，在对国内外的各种相位测量系统进行了深入分析的基础上，针对相位测量系统的各个环节进行了研究。 |
| 8. | The relationship between the clock jitter and the sampling sequence of a sine wave is studied , and a new method to measure the jitter and distribution of a clock signal with pico - second resolution is proposed using adc sampling based on estimating method of the parameters in sine signal
摘要研究了时钟抖动与正弦信号的采样序列之间的关系，并在正弦信号参数估计法的基础上，提出一种利用adc采样测量皮秒量级的时钟抖动大小和分布的新方法。 |
| 9. | Based on chaos critical state detection method , two approaches are used : one is that making a pretreatment on dsss signal to take out the period information of the signal . the other is that starting from the analysis of the sensitivity of duffing system to ambi - polar square wave modulated by sine signal , the
通过两种途径:对信号进行预处理,提取出其中的周期信息,转化为单频信号检测;从研究duffing振子对方波调制信号的敏感性出发,全面分析其中的间歇混沌现象,实现信噪比- 20db以下dsss信号的检测。 |
| 10. | One new method that the uwb signal can be received ambiguously has been presented in this dissertation . furthermore , the sampling lfm signal becomes two sine signals with different frequencies based on two different delay processes . based on fft and remainder algorithm , the modulation rate and initial frequency of sub - sampling lfm signal are estimated precisely and unambiguously in negative snr
该方法通过在数字域对信号进行两路不同的延时和余数定理实现欠采样条件下超宽带线性调频信号的调制斜率和初始频率的无模糊估计,在不降低参数估计精度的前提下,解决了欠采样方法引起硬件复杂度增加的问题。 |
