The principle of impulse radio (IR), several kinds of pulse generators, pulse modulation and signal emission for UWB radio, as well as characteristics of UWB-IR are mainly presented and concluded.
重点分析了脉冲无线电方式的原理,脉冲的几种产生方法,调制、发射以及脉冲信号的技术特点。
The radio and television signal emission facilities, including antenna, feeder links, tower masts (poles), ground network, satellite transmitting antenna as well as the auxiliary equipments thereof;
广播电视信号发射设施,包括天线、馈线、塔桅(杆)、地网、卫星发射天线及其附属设备等;
At last, we recomposed some frequency band of wavelets, and the results can efficiently extract the features of acoustic emission signal.
最后通过对能反映源特征的频带信号进行重构,这样能更好更有效的提取声发射信号的本质特征。
This paper introduces modal acoustic emission evaluation technique, including its fundamental principles, signal characteristic, noise rejection and source location etc.
本文介绍了模态声发射检测技术的基本原理、信号特征、噪声剔除和源定位等内容。
So, during passive FTIR measurement, the temperature and the emission signal amplitude of the source must be observed carefully in order to get satisfactory instrument response function.
因此,在被动式测量时,要密切注意发射源温度以及发射源发射信号大小,以便获得最佳仪器响应函数校正结果。
This thesis also analyzes tolerance factors which affect emission consistency in detail, and suggests an effective method to control the acceleration pedal position signal.
论文还详细分析了影响柴油机排放一致性的公差因素,对油门位置信号提出了有效的控制方案。
The damage signal of high speed composite flywheels was collected by acoustic emission method.
采用声发射法对复合材料飞轮试件高速旋转时的损伤信号进行采集。
An acoustic emission (AE) test rig with signal acquisition virtual instrument system has been developed for engineering ceramics high speed deep grinding.
建立了工程陶瓷高速深磨中声发射的实验系统,自主开发了其中的声发射信号虚拟仪器采集系统。
The characteristic of linear and nonlinear responses between arc excited ultrasonic emission and excited frequency was realized by the received signal from the acoustic to the ultrasonic spectrum.
对受激电弧的声发射信号分析表明,从音频到超声频带,电弧声发射与激励频率之间存在着线性响应和非线性响应特征。
Receiver: receiver connected to computer, rf modules receiving wireless mouse emission signal decoding, through by MCU, computer control cursor movement USB into.
接收端:接收器连接到电脑上,射频模块接收无线鼠标发射信号,由单片机解码,通过USB送入电脑控制光标动作。
Equally objectionable is the fact that saturation by spontaneous emission reduces the gain exercised by an incoming signal.
同样不利的事实是,自发辐射引起的饱和减少了入射信号所能获得的增益。
The main function of hardware component is to obtain the signals of pressure sensor signal, oxygen sensor signal and the front and back emission components of catalytic converters.
硬件部分主要功用是获取压力传感器信号、氧传感器信号以及催化器前后端的废气成分,并把数据实时的传输给电脑。
To a smaller extent, a reduction in the uptake of atmospheric N2O at the soil surface relative to its emission could also have contributed to the reported isotopic signal.
一个较小的程度上,减少了在吸收大气n2o在土壤表面相对其排放也可作出贡献的报道同位素信号。
The control circuit controls the pump according to the signal of the light emission receiver.
一控制电路,它根据光发射接收器的信号控制水泵。
The problems of the radiated emission for outdoor signal lines during the operation of ADSL access equipment are difficult to resolve.
在ADSL接入设备的运行过程中,户外信号线引起的辐射发射超标问题比较突出,难以解决。
Conduction emission is an electromagnetic emission transmitted on power or signal lines and a primary form of electromagnetic interference at low frequencies.
传导发射是沿电源线或信号线传输的电磁发射,在低频范围内,传导发射是电磁干扰的主要形式。
Abstract: the simulation of acoustic emission signal processing of pressure pipeline crack micro leakage with the localization of the leaking source was carried out under the laboratory condition.
摘要:在实验室的条件下模拟压力管道裂纹微泄漏源的声发射信号处理与泄漏源定位。
It is pointed that wavelet analysis has a powerful ability for weak signal detection, which is suitable for withdrawing fault diagnosis of acoustic emission (AE) signals well.
小波分析具有很强的弱信号的检测能力,适用于提取声发射信号的故障特征。
The character of high speed light pulse distortion and the fluency of the amplified spontaneous emission on the SNR gain under high power signal and pumper are analyzed.
同时进一步分析了在大信号、高泵浦功率条件下高速光脉冲信号放大过程中的各种畸变特性以及放大的自发辐射对系统信噪比增益的影响。
A new demodulation method of fiber Bragg grating (FBG) sensing signal, which is by making use of the monotonic decline section of an amplified spontaneous emission (ASE) light source, is proposed.
提出一种利用放大的自发辐射(ase)光源的单调下降边带对光栅光纤传感器进行解调的新方法。
Phase Variation Analysis of Transient Evoked Otoacoustic Emission Signal with or without Contralateral acoustic Stimulation.
对侧刺激声作用下瞬态诱发耳声发射信号的相位研究。
We have derived the formulas of harmonic spontaneous emission power density, small signal gain of this undulator FEL and the coupling coefficients between the electrons and the radiation field.
导出了这种新型摇摆场结构自由电子激光高次谐波的自发辐射功率密度和小信号增益公式。以及电子与辐射场的耦合系数的表达式。
Obviously some of themarket has made it clear signal, energy saving, emission reduction, reducing consumption and improve efficiency.
一些很明显的市场信号已经表明了,节能、减排、降耗、提高效率。
Obviously some of themarket has made it clear signal, energy saving, emission reduction, reducing consumption and improve efficiency.
一些很明显的市场信号已经表明了,节能、减排、降耗、提高效率。
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