Then it introduces some classical arithmetic of audio information hiding, such as Least Significant Bit, Phase Coding, Echo hiding. And we use them in our system to realize covert communication.
然后介绍了几种经典的音频信息隐藏算法，如最不重要位，相位编码和回声编码，并且将它们用在我们这套系统中实现了隐秘通信。
These signals provide an important reference of the gain of antenna, the time reference, the phase reference and the frequency of carrier wave for generating stimulant echo signal.
这些信号分别为模拟回波信号的生成提供了天线增益大小、时间基准、相位基准和载波频率大小等重要的参考信息。
PGA algorithm based on radar echo signal is one method of estimating and correcting phase error in time domain, and its algorithm is simple to use.
基于雷达回波信号的PGA算法是在时域估计和校正系统相位误差的一种方法，算法较简单。
The sources of variant synchronization errors are discussed, the analysis of echo phase effected by variant errors is given.
论述了各种同步误差的来源，分析了引入各种同步误差后对回波相位的影响；
A method which makes use of the phase information of spectrum of radar echo amplitude signal to make azimuth super resolution is given.
本文介绍了一种利用雷达回波幅度信号频谱相位信息进行角度超分辨的方法。
The echo model of moving target is established based on three channels with the slant-placed antennae in terms of the equivalent phase center principle.
利用等效相位中心原理建立了天线斜置情况下三通道运动目标回波信号模型，给出了天线倾斜角对动目标检测、最小可检测速度和盲速的影响。
SPGA algorithm compensates the envelope and phase of the echo signal which has not be corrected range migration.
SPGA算法利用估计得到的侧摆对距离徙动校正前的回波数据进行包络和相位补偿。
In this method, the echo of the synthesized equivalent micro-motion point is obtained by modulating the phase of intercepted radar signal with sinusoid in the slow time.
该方法通过对截获的雷达发射信号在慢时间域进行正弦相位调制，得到了等效微动点的回波信号。
Then discussing the phase information and Doppler characteristic of target echo wave in the pulse Doppler phase radar.
并且讨论了在脉冲多普勒相参体制雷达下目标回波的相位信息以及目标信号的多普勒谱特性。
The phase matching transform is performed on the sample series. of narrow-band radar echo, and the centroid position parameter is estimated by searching for the maximum value of the matching function.
然后对窄带雷达回波采样序列进行相位匹配变换，搜索匹配函数的最大值，从而得到质心位置参数的估计值。
Phase errors is introduced in echo demodulation process because of the frequency synchronization error, and then, the final focus result will be deteriorated.
在接收端解调过程中，该频率同步误差会引入一定的相位误差，进而影响下一步的成像处理。
The interferometric phase of layover region is not accurate due to the superposition of multi-echo, it makes the discrimination difficult in phase unwrapping.
由于多点回波叠加，叠掩区域的相位并不准确，而且在相位解缠中影响判别，因此对叠掩区域进行识别具有重要意义。
The noise effect on the motion compensation is discussed. To solve the problem, a new method 'which USES echo goodness-of-fit curve to smooth the centroid range trace and phase trace is proposed.
讨论了噪声对补偿的影响，提出了用回波数据拟合曲线来光滑质心距离轨迹和相位轨迹的方法。
This paper presents the development of a pulse-echo measurement method, based on the use of a phase spectrum to determine the ultrasonic wave velocity. A detailed descripsion of the theory is given.
本文报道了一种基于脉冲回波相位谱的超声波速度测量方法，并给出了它的详细理论推导过程。
This paper presents the development of a pulse-echo measurement method, based on the use of a phase spectrum to determine the ultrasonic wave velocity. A detailed descripsion of the theory is given.
本文报道了一种基于脉冲回波相位谱的超声波速度测量方法，并给出了它的详细理论推导过程。
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