The paper researches the received waveform and the characteristic of BER in one refection and twice refection, studies the influence of multipath distortion on the transmitted pulse. 通过研究几种发射脉冲的一次反射和二次反射的接收波形以及它们的误码率特性,研究了信道多径失真对室内无线光通信的影响。
Beginning from the analysis of ignition waveform, this paper researches the influence of engine rotate speed variation to high voltage ignition waveform. 从点火波形分析入手,研究发动机转速变化对高压点火波形的影响。
Raman amplification can compensate the fiber loss, does not change the temporal waveform and has little influence on the linear chirp of the soliton. 研究表明,拉曼放大能够补偿光纤损耗,但不改变孤子脉冲的时域波形,对孤子脉冲的啁啾影响不大。
It can be seen from synthetic waveform that the influence of well-wall boundary condition on acoustic waveform is so serious that the amplitude variation of Stoneley wave fails to reflect true variation of formation permeability. 由合成波形可以看出,井壁上的边界条件对声波波形影响很大,由此产生的斯通利波的幅度变化并不完全代表地层渗透率的变化。
Through searching features of waveform signal of objects, this method can identify and extract feature signals which can indicate real state of the measured objects and restrain the influence of disturbance in field signal. As a result, the testing and monitoring accuracy is greatly improved. 通过对对象信号波形的特征搜索,实时地辨识和提取能反映被测对象真实状态的特征信号,有效地抑制干扰对波形信号的影响,大大提高整个系统的检测和监控精度。
This paper analyzing the voltage signal waveform shows the influence of load-balance resistance on the charging and illuminating signals and the necessities of employing the load-balance resistance. 通过对摩托车充电、照明电压信号的波形测试分析,阐述了负载平衡电阻对摩托车充电、照明信号的影响,并就负载平衡电阻的使用必要性进行了探讨。
Recent studies have revealed temporal waveform envelope cues as a function of time having significant influence on tone recognition in continuous interleaved sampling ( CIS) of cochlear implants. 文献研究表明,在电子耳蜗连续交替取样策略中,时域信息特别是包络随时间的变化轨迹对汉语声调识别有重要影响。
This paper analyzed several kinds of rectifier waveform, and the influence analysis of rectification DC power supply to load ( coil) were given. 本文对几种常用整流波形进行分析,并就整流直流电源对负载(包括线圈)影响进行了分析。
Bring upped the calculation methods on the valid useful signal, transition process influence time, ramp waveform influence time, zero time; 3提出了有效有用信号的确定,过渡过程影响时间的确定,斜阶跃影响时间的确定,零计时确定的方法,为不作影响因素改正,直接利用无影响的数据提供临界时间;
The cause of the output voltage waveform in the modulation order, the formation of clock pulse disturbance and the influence of operating point parameters on the output voltage waveform are described and the method of regulating operating point parameters is presented. 文中提出了复位损失率的概念,论述了输出电压波形呈现调制状态的原因、时钟脉冲干扰的形成以及工作点参数对输出电压波形的影响,并给出了调节工作点参数的方法。
On the basis of these theories, the no-loading EMF of powerformer is analyzed and the no-loading waveform deviation factor is taken out, in the conditions of considering the influence of damping winding and not considering it. 在这些理论基础之上,分析了考虑阻尼绕组影响与不考虑阻尼绕组影响两种情况下电力发生器的空载感应电势,求取了空载电势波形畸变率。
During ultrasound thickness measurement with waveform, we can examine the interested areas and avoid the influence of the blind zone by using a convenient gate. 在超声测厚过程中使用波形方式利用闸门进行测量,可以方便自由地选取测量对象,有利于避开盲区测量;
Waveform design and generation is a key component of ultra-wide band radar, whose qualification and performance directly influence the performance of the whole radar system. 超宽带雷达波形的设计与产生部分作为超宽带雷达中的一个关键组成,它的指标和性能将直接影响到整个雷达系统的性能。
We analyze the output spectrum of DDS and adopt the method of time-domain waveform to analyze these influence generated by the phase noise and spur in the output spectrum. 详细分析了DDS的输出频谱以及相位噪声和杂散对DDS频谱特性的影响。
After the simulative circuit experiments by use of PSpice Software, the components 'parameters are defined. Through the simulative waveform, some circuit breakdown are observed, also the influence on the output caused by the changes of input voltage and load is analyzed. 通过Pspice软件进行电路仿真实验,确定了稳压管稳压电路的元件参数,观察到电路故障时的仿真波形,分析了输入电压和负载变化对电路输出的影响。
According to the carrier wave leakage and mirror wave interference in the signal generation, this paper analyzes the source of waveform distortion and its influence to signal spectrum and pulse compression result. 针对生成信号中存在的载漏和镜像等失真,本文对波形失真来源及其对信号频谱及脉压结果的影响进行了全面分析与仿真。
And some approaches such as detecting the distortion waveform of MOA leakage current, bypassing the surface leakage current and making measurement in right climate condition can evaluate or reduce the influence of external pollution on leakage current of MOA. 用监测泄漏电流波形畸变,旁路MOA表面泄漏电流,选择合适的气候条件进行检测等可以评估或减小污秽对MOA泄漏电流的影响。
These noises disturb the recognition of waveform and influence the accuracy of feature extraction. 这些噪声干扰影响了波形的识读,给特征提取的准确性带来了挑战。
According to study on causation of waveform distortion and influence to count result after packaging current transformer with outer metal shielding layer, control methods is shown to tackle output distortion of sensor. 研究了增加金属屏蔽层后的电流互感器输出波形发生畸变的原因以及对计数结果的影响,说明了传感器输出失真的控制方法。
And then, finite element analysis for the no-load back EMF of wheel motor was carried out. The superposition principle of back EMF waveform and the harmonic frequency which had great influence on waveform sine were got. 然后,通过对轮毂电机空载反电动势进行有限元分析,得到了反电动势波形的叠加原理及对波形正弦性影响较大的谐波次数。
As an important part in the research into the characteristics of ultrawideband pulse, the selection of the pulse waveform has an direct influence on the performance of the overall ultrawideband system. 脉冲波形是超宽带脉冲信号特性研究中的重要内容,脉冲波形的选择直接影响到整个超宽带系统的性能,因此对脉冲波形的研究是非常有意义的。
The paper detailed introduces the structure, the working principle, the drive circuit and drive current waveform of the electronic injector. The influence of fuel type, injection pressure and injection duration on spray characteristics was studied. 介绍了高压柴油电控喷油器结构原理、驱动波形以及驱动电路的设计及检测过程;试验比较了不同燃油种类、不同喷油压力、不同喷油持续时间的喷雾特性。
The synthesis of arbitrary waveform is one of difficulty in the design project that is one of factors influence on system performance. 任意波形的合成是课题设计的一个难点,也是影响系统性能的关键因素之一。
Second, design a square waveform exciting circuit with high accuracy and low power consumption, and the environment has low influence on the result of the A/ D conversion. So the stability of measure system is improved. 其次,设计了频率可控、低功耗、抗干扰能力强、外界环境对A/D转换结果影响小的高精度激磁电路,提高了流量测量的稳定性。