Contrarily, if the frequency bandwidth of signal is finite, the time length of signal will be infinite when sampling in frequency domain, the time folding phenomenon will certainly happen.
反之，若信号的频带宽度有限，当进行频域抽样时，时域必然发生混叠。
Since there is an inherent trade-off between the amount of available bandwidth and the distance that a signal can travel, the more bandwidth is available, the farther a signal can travel.
既然在可用带宽数量与信号能够传播的距离之间存在固有的平衡，那么，可用带宽越多，信号就能够传播得更远。
By analyzing local properties of the signal, the application could, for instance, sharpen frames of video, or look for redundant information that can be removed to save memory or bandwidth.
通过分析信号的局部特性，应用程序就可以增强影像或者找出并删除多余的信息来节省内存或带宽。
In the highly crowded HF band, available continuous bandwidth is very narrow, this threaten the viability of HF radar based on the continuous spectra signal system seriously.
在拥挤的高频频段，可用的连续带宽比较窄，基于连续谱信号体制的高频雷达的生存能力受到严重威胁。
Because of the limitation of bandwidth, signal must be transmitted in low speed.
由于受传输带宽的限制，要求信号以较低的速率传输。
An adaptive image transform coding method for compressing the bandwidth of the digital image signal is described.
本文介绍了一种自适应图象变换编码方法来压缩数字图象信号的带宽。
Signal sampling system of video communication over network usually has a low sampling rate suffering from the limited bandwidth, so aliasing noise is big problem.
受传输带宽限制，网络视频采集系统的采样率低，欠采样噪声严重。
This kind of operational amplifier has higher dynamic scope and has solved the problem that the signal amplitude gets limit by the bias voltage, and has higher bandwidth.
这种运算放大器具有较高的动态范围，并解决了偏置电压引起的信号摆幅受限的问题，而且具有更高的带宽。
The bandwidth of target signal after stretch processing and narrowband filtering, the data sample ratio and computing burden are reduced greatly and the method is easy for engineering implementation.
经拉伸处理和窄带滤波的目标信号带宽大大降低，数据采样率也大大降低，因此计算量减小，利于工程实现。
The maximum acquisition range can be up to one half of overall signal bandwidth.
新算法可实现的最大载波频偏获取范围是整个信号带宽的一半。
Besides designing and selecting waveforms, in order to acquire high time bandwidth product, it is the major practical method to increase the bandwidth of the signal with limited time duration.
除了对波形本身的设计和选择，设法增大有限时宽信号的带宽，是实际获得大时带积脉压信号的主要手段。
The potential temporal hopping point set is fetched from the temporal projection variance of the adjacent domain time-frequency image according to the instantaneous signal bandwidth.
根据跳频信号瞬时带宽，将潜在跳频频率点邻域时频图投影到时域，分选潜在频率跳变点集合。
In this paper, the frequency spectrum and the bandwidth of the frequency shift signal with continuous and discontinuous phase are analyzed.
分析了相位连续与不连续移频信号的频谱并比较了它们的带宽。
Improving measurement accuracy of low level signal is studied using RF attenuation, resolution bandwidth, video bandwidth, and video average.
研究了利用频谱仪射频衰减、分辨带宽、视频带宽和视频平均的方法，提高和改善低电平信号的测量精度。
The essence of speech compression is to reduce the rate of digital voice in the case of assuring the quality of voice, therefore reducing the bandwidth occupied by speech signal.
语音压缩的实质就是在保证语音质量的情况下，降低数字化语音的数码率，从而减少数字化语音信号所占用的带宽。
In this paper, the effects of the Op · Amp finite gain and bandwidth on the performance of sc networks in small signal are discussed and a method using Z-domain Op · Amp macromodel is presented.
本文针对小信号情况下运放有限增益和有限带宽对开关电容网络的影响，提出了利用离散域运放宏模型分析此问题的方法。
One possible solution is to artificially extend the signal bandwidth at the receiving end of telephone system by reconstructing the wideband speech.
一个可行且容易实现的方案就是在电话网络接收端通过重构宽带语音的方式来扩展电话信号的带宽。
Besides bandwidth problems, we have noticed that putting resistors in series with the sound signal always results in dynamic constriction and loss of details.
此外带宽问题，我们注意到，在与声音信号的动态收缩总是和细节损失将电阻一系列成果。
It is also cascaded directly to make up high order filters, in addition to, these circuits can be operated under the higher signal bandwidth and have lager linearity and larger range of dynamic.
另外，该电路也可工作在较高的信号带宽下，具有较大的线性度和动态范围。
However, jitter remains a concern; several jitter mechanisms exist for the biphase-mark-encoded signal, the biggest problem being that of bandwidth limitation at any stage of the interface.
然而，抖动依然令人担忧，一些抖动机制双相标记编码信号，最大的问题是存在的带宽限制，在任何界面的阶段。
The traditional algorithm of narrow band array is sensitivity to the signal bandwidth. Its performance is declined while the bandwidth becomes larger.
传统的窄带阵列信号处理算法对信号的带宽十分敏感，其性能随着信号带宽的增大而迅速下降。
The circuit designed in the thesis could output comparatively flat signal wave, and amply signals with bandwidth of high to 40m.
本文实现的电路板可对带宽达40m的信号进行平稳的放大并输出较平坦的信号波形。
Thus pulse shaping technique can be used not only shape the spectrum of the transmitted signal to increase the bandwidth efficiency but also to reduce its PAPR.
因此脉冲成形技术不仅能对传输信号进行频谱成形来提高系统的频带利用率，而且还可以减小信号的PAPR值。
In radar signal processing systems, the central frequency and bandwidth of clutter must be accurately estimated to suppress clutter and prevent target whitening.
在雷达动目标检测等处理中，为了有效抑制杂波，并防止目标白化，首先需要对杂波谱中心和谱宽进行有效的估计。
The thesis plans improving frequency estimation accuracy, without changing the bandwidth of the transmitted signal. So, we can improve the range estimation accuracy.
因此，本文拟在不改变扫频带宽的前提下提高频率估计精度从而提高距离测量精度。
The bandwidth of chaos is directly related to the rate of signal transmission and the range resolution.
混沌的带宽直接关系到信号传输的速率和测距的距离分辨率。
The bandwidth of the filter in the receiving system doesn't only suppress the backscattering, it also has a suppression effect on the target signal.
其中接收系统中滤波器的带宽的大小不仅对后向散射起到抑制作用，而且对目标信号产生抑制作用。
The effects of optical filter bandwidth on the received signal quality are discussed by analyzing bit error rate (BER) and contrast ratio performances.
通过分析比特错误率和对比性能讨论了光学滤波带宽对接收信号质量的影响。
By narrowing the bandwidth of the signal and amplifying it by a lock-in amplifier, the fluctuating components of the signal can be shown on an oscillograph with lock-in amplifier.
锁相放大技术对被测信号进行窄带放大，锁相放大器结合示波器输出了被测信号的周期变化部分，实现了光热法测量中微弱信号的测量。
Signal properties of spaceborne spotlight SAR were discussed. The relationships of centroid Doppler, Doppler bandwidth and PRF (Pluse Repetition Frequency) with squint Angle were analyzed.
分析了星载聚束式合成孔径雷达(SAR)的信号特性，主要研究了多普勒中心频率、多普勒带宽以及脉冲重复频率(PRF)与斜视角的关系。
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