查询词典 time of pulse

The results show the temporal pulse shape modulation is affected by the broadening factor and the delay time, as spectrum modulation is only affected by the delay time, and the intensity factor changes similarly with the cosine function of the phase factor.

研究结果表明，时间调制与基元脉冲的展宽量及相邻脉冲之间的延迟时间有关，光谱调制只与相邻脉冲之间的延迟时间有关，而强度的演化则与相位因子的余弦函数演化具有一定的相似性。

A detection method of double-threshold constant false alarm movement object on double-base synthetic aperture radar includes finalizing distance compression of various pulse-sampling, dividing orientation time to be multiple CPI, carrying out FFT in each CPI to enter orientation frequency domain, comparing data amplitude of frequency channel at external of clutter region with the first threshold and outputting point trace, making coagulation on point trace, making Hough transform in point trace domain and making decision of the second threshold.

本发明涉及一种用于双基地合成孔径雷达的双门限恒虚警运动目标检测方法，其特征在于：1对每个脉冲采样完成距离压缩；2把方位时间分割成多个相干处理间隔；3在每个CPI内做快速傅立叶变换进入方位频域；4把杂波区外的频率通道的数据幅度和第一门限比较做判决并输出点迹；5点迹凝聚；6在点迹域做Hough变换并做第二门限判决。

The one-dimensional time-dependent Schrdinger equation was numerically solved with the symmetric splitting of the short-time exponential propagator and the fast Fourier transformation, and influence of intensity and pulse with on ionization of linear multi-ation molecular ion in two-color laser fields was researched.

利用短时指数传播子对称分割法和快速傅里叶变换技术，数值求解了一维含时Schrodinger方程，探讨了双色激光场中激光的基波和谐波强度之间的不同配比以及脉宽对线性多原子分子离子电离的影响。

This method employs the exponential pulse time series as input to excite CFD model, which can provide slick aerodynamic forces acting on the body through CFD simulation, Then discrete time aerodynamic models, defined among interesting range of frequency, can be trained based on the CFD input output relationship, those models can he implemented thereafter to simulate aerodynamic response for simple-harmonic input of displacement with suitable frequency.

该方法采用具有连续频谱分布且位移光滑的指数脉冲序列为CFD模型运动的输入，通过数值模拟得到作用在模型上的气动力。利用已知的输入和气动力建立起反映系统气动力特征的离散时间气动模型。

The influences of some relevant parameters on resonance ionization efficiency in the recent laser pulse time-delayed scheme were analyzed with the framework of time-dependent Schrdinger equation. As a versatile example, the feasibility of this scheme applied to lutetium isotopic analysis by Laser Resonance ionization Spectrometry was discussed.

针对宁西京教授提出激光脉冲延时方案，在含时薛定谔方程理论框架下探讨了各种参数对激光共振电离效率的影响；并以镥原子共振电离为例，探讨了该方案用于激光共振电离质谱同位素分析的可行性。

For example,speaking 555 timer flakes and intergrated operate amplifier CA3140 to control,it is a normal thing that the timer is coming out,But today this timer adopt 555 timer oscillatory circuit as at time base signal pulse input,choise magnificated intergrated flake CA3140 to manger ,make the timing of 555 steady state time lagmay be increase one hundred multiple.

由于集成块集成度高，功能强，功耗低，速度快，价格便宜，实用灵活，开发周期短等优点，从上个世纪开始，随着各种各样的集成芯片的问世，比如说555定时器芯片和CA3140集成运算放大器芯片，定时器的形成已经是很普通的事情，但今天这个定时器采用555定时器振荡电路作为时基信号脉冲输入，选择可放大的集成运算放大器3140控制器，使555的稳态延时范围可以增加100倍。

Then by measuring the pulse wave propagation time between the progressive wave and reflected wave, we can find the relationship of the time and the blood pressure, and establish the related systolic blood pressure measurement equation.

具体方法是通过交替点亮红光和红外光获取容积脉搏波，经放大滤波及信号处理后得到加速脉搏波，通过测量其中推进波和反射波之间的脉搏波传播时间来建立与血压的关系。

Design of CSD Code FIR Digital Filter Based on Time Division Multiplex;2. The current integrated well log instrument with multiple bus data transfer is improved by using pulse-code modulation and time division multiplex .

利用脉码调制技术和时分复用技术对现有的多总线数据传输综合录井仪进行改进，通过在井台区设置一个接口箱，使录井仪的主机柜与接口箱之间只用一根总线连接，变多总线数据传输方式为单总线数据传输方式。

In this thesis, the heterojunction with intrinsic hydrogenated amorphous silicon thin layer ( heterojunction with intrinsic thin layer: HIT) solar cells are investigated. The solar cell structure of p/i/n are fabricated. The substrate is a typical 4-inch n-type wafer with (100) crystal orientation, 1~10 ohm-cm and about 525 μm thickness. The p and i a-Si:H layers are deposited by a 13.56 MHz plasma enhanced chemical vapor deposition. The i a-Si:H layers are especially deposited by pulse-wave modulation plasma technique with fixed plasma turn-off time toff = 10 ms and changed plasma turn-on time ton= 10 to 40 ms to selectively control the different silicon to hydrogen bonding configurations. The effect of various Si:H bonds on the performance of HIT solar cells are explored.

中文摘要本论文针对异质接面薄本质层(heterojunction with intrinsic thin layer： HIT)太阳电池进行研究，采用一般典型四英吋晶向为(100，厚度约为525 μm，电阻率约为 1~10 ohm-cmn型矽晶圆为基板，制作p/i/n太阳电池，p及i层薄膜以13.56 MHz电浆加强化学气相沈积，i层并采用脉波调变电浆技术，在固定电浆关闭时间toff = 10 ms及改变电浆开启时间由ton = 10 ms 至40 ms条件下制作具有不同矽氢键结微结构的氢化非晶矽薄膜以探讨不同矽氢键结对太阳电池性能的影响。

On the aspect of ultrasonic wave Transmit and Receive, we use two probes to realize the switching between transmitting and receiving mode; we also adopted a transmitted scheme based on intermissive multi-pulse, which develops the Time Difference with Interpolation, uses digital filter to adjust the waveform, and calculates the Time Delay with Correlation Arithmetic.

在超声波发射和接收方面，系统采用了两个探头进行发射和接收的切换，并采用了一种间隙式多脉冲发射方案；接收并采集数据后利用软件插值来提高时间分辨率，再用数字滤波来调整波形，最后用相关算法进行数据的相关运算，从而计算出时延得到流速。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。