pulse spectrum的例句大全

Due to the frequency selectivity and high insertion loss of SAW device, the input must be high pulse whose spectrum width can cover the center frequency of SAW tap delay line.

由于SAW器件具有频率选择性及较高的插入损耗，使得它的输入必须为高脉冲且脉冲的频谱宽度能覆盖SAW抽头延迟线的中心频率。

This method can be applied to different countries' UWB frequency spectrum programming for its flexible control of pulse frequency and bandwidth.2.An improvement is made to the multi-user Prolate Spheroidal Wave Functions ( PSWF) IR UWB orthogonal pulse waveforms design.

该方法具有频率、带宽的灵活可控性，适用于不同国家的UWB频谱规划方案。2.对多用户椭球波函数（PSWF）脉冲UWB正交波形设计方法进行了改进。

collect the mechanical rotary information by encoder, use high-precision clock pulses of 50m to calculate the pulse width of the encoder, and analyse the data with fft spectrum and cepstrum analysis.

采用编码器采集机械的旋转信息，利用频率为50M的高精度计数脉冲来计算编码器脉冲的宽度，并对所采集的数据做FFT频谱和倒频谱分析。

methods: various parameters of the pv flow and mitral flow spectrum in 132 cases of lv dysfunction and 90 healthy cases were determined by pulse doppler echocardiography.

方法：应用脉冲多普勒技术对132例左心功能Ⅰ～Ⅳ级的CHD患者及90例健康人（正常对照组）进行了肺静脉血流频谱各项参数的测定并进行对照研究。

The pulse waveform design is represented as a constrained optimization problem, which takes the spectrum utility.

该逼近优化问题把频谱利用率作为目标函数,正交性和频谱屏蔽作为约束条件.

Optical amplifiers-Test methods-Part 10-2 : Multichannel parameters; Pulse method using a gated optical spectrum analyzer.

光学放大器.试验方法.第10-2部分: 多道参数. 选通光频谱分析仪脉冲法.

This paper presents the pulse signal spectrum bandwidth using Romberg numerical integration algorithm under a certain energy wastage required. A reconstruction signal is obtained by Fourier Series, and the optimum bandwidth of the measurement system is also presented.

本文用Romberg数值积分法计算出在一定能量损耗限值要求下的脉冲信号频谱宽度，并用付氏级数对其进行了信号重构验证，据此得出了脉冲信号测试系统带宽的最佳值。

The Frequency Spectrum Dsitribution and Time Propagation of Voltage and Current pulse on a Transmission Line.

传输线上脉波电压及电流之频谱分布及时域传播.

In this paper, Power spectrum of CAP ( carotid pulse) by periodogram and AR model is given, respectively.

采用周期图法和AR参数模型法分别对颈动脉搏动波进行了功率谱分析。

The calculation of such MSK type signals ′ power spectrum and the relationship between pulse shaping function and power spectrum are described in this paper. Specific examples are included as illustrations of the theory.

本文给出了这类信号功率谱的计算公式以及加权函数和功率谱的关系，并给出实例。

Study on Pulse Doppler Frequency Spectrum Parameter Changes During Left Ventricle Diastolic Period in Healthy People Over 50 Years Old

50岁以上正常人左室舒张期彩色多普勒血流频谱参数变化的研究

Two methods were used to shape the spectrum of laser pulse.

采用腔内和腔外两种方法对激光脉冲进行光谱整形。

We can get current optical path difference or pulse delay from the spectrum graph directly.

即通过采样的光谱图,可以得到当前状态下的脉冲延时.