Random pulse position modulation (RPPM) signal not only has good resolution of distance and velocity, but also has low probability of interception and strong properties of eccm.
随机脉位调制信号不仅具有良好的距离和速度分辨力，而且具有较低的被截获概率和较高的抗干扰性能。
Signal in Mr Images is high or low (bright or dark), depending on the pulse sequence used, and the type of tissue in the image region of interest.
磁共振中的信号根据所用脉冲的顺序以及所要成像组织的类型分为高信号或第信号(亮或者暗)。
It will give patients treatment by means of the amplified amplitude modulating wave current that can be obtained form medium frequency amplitude modulated by the low frequency pulse signal.
它将有关低频脉冲信号对中频调幅后，利用被放大的调幅波电流对人体进行治疗。
Aimed at the application of low probability of intercept adopting pulse compression system, a new arithmetic of recognizing binary phase coded pulse compression radar signal is proposed.
针对采用脉冲压缩体制的低截获概率雷达的应用场合，提出了一种识别二相编码脉冲压缩雷达信号的新算法。
However, according to alternative embodiments of the present invention, a pulse can refer to a period of time when a digital signal is in a logic low state.
然而，依照本发明可替换实施例，在数字信号处于逻辑低电平状态时，脉冲也可指时间周期。
The early fault signal is very faint, low frequency appears more to pulse, easy to be interfered by the ambient noise even submerged.
早期故障信号非常微弱，多呈现低频脉动，容易受到噪声干扰甚至被环境噪声所淹没。
It introduces the overall design of the system in chapter two, formed mostly with precondition of pulse, enlarge signal, Low-Pass Filter, AD Conversion, Serial Communication, waveform showing etc.
第二章介绍了系统的总体设计方案，它主要由脉搏信号预处理、信号放大、低通滤波、AD转换、串行通信、波形显示等几部分组成。
The white Gaussian noise was successfully separated from noise signal in low-field pulse NMR system and its parameters were estimated by using this method.
采用该方法从实际低场脉冲核磁共振系统噪声信号中分离出高斯白噪声并对其进行了参数估计。
Objective The directly sampled pulse wave signals have always a low signal to noise ratio, which leads to difficulties in the following research.
目的采样得到的脉搏波信号信噪比较低，这给后续研究带来了困难，因此消除噪声的干扰是准确进行相关医学测量的关键前提。
The results show that this amplifier has a good amplification effect on the pulse signal at a low repetition frequency.
结果表明，本脉冲光纤放大器对低频脉冲信号有很好的放大效果。
Thirdly, the TEM horn antenna which is used to receive pulse signal is designed in this part. For the low limited frequency, the TEM horn antenna is mainly designed to make it miniature.
再次，设计了用于脉冲接收的TEM喇叭天线，由于要求的下限频率较低，所以重点对TEM喇叭天线进行了小型化的设计；
Under the condition of low perfusion, the measurement of non-invasive saturation of pulse-blood oxygen is low-accuracy, lower signal-to-noise ratio (SNR) is one of the crucial causations.
在弱灌注条件下，无创脉搏血氧饱和度的测量存在着准确度不高的问题。传感器采集信号的信噪比低是导致该问题的主要原因之一。
Under the condition of low perfusion, the measurement of non-invasive saturation of pulse-blood oxygen is low-accuracy, lower signal-to-noise ratio (SNR) is one of the crucial causations.
在弱灌注条件下，无创脉搏血氧饱和度的测量存在着准确度不高的问题。传感器采集信号的信噪比低是导致该问题的主要原因之一。
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