信号频率幅度也按要求可调。
Signal frequency range is also adjustable according to requirements.
提出了一种新的正弦信号频率估计方法。
A new method for estimating the frequency of a sinusoid signal is proposed.
靠加长或缩短这根水柱，天线就能调节到相应的信号频率。
The aerial can be adjusted to the frequency of those signals by lengthening or shortening the spout.
为了确保正确操作，设备必须重置后参考信号频率的变化和电。
To ensure proper operation, the device must be reset after reference signal frequency changes and power-up.
提出了一种在未知信号频率条件下的FSK信号数字化解调方法。
A digital demodulation method of the FSK Signal is presented when its frequency parameters are unknown.
锁相系统是一个能够跟踪输入信号频率和相位的闭环自动控制系统。
The phase-locked system is a closed loop automatic control system that can follow the frequency and phase of the input signals.
提出了一种基于频域高阶累积量的信号频率和到达角联合估计算法。
In this paper, a new cumulants-based method for the joint estimations of frequency and DOA of spatial signal was discussed.
数字频率计是直接用十进制数字显示被测信号频率的一种测量装置。
The digital frequency meter is a device which is one kind of using decimal system digital directly display the signal frequency.
最后，分析了各种方法的优缺点，讨论了调整输出信号频率的方法。
At last, advantages and disadvantages of these methods were analyzed and adjusting frequency method was discussed.
当被测信号频率较低时，需要很宽的选通门才能得到较高的测量精度。
If the signal frequency to be measured is low, wide strobe gate is required for high measurement precision.
然而，从频域信号中提取出的信息是以信号频率成分而非信号形状为基础。
However, the information extracted from a frequency domain signal is based on the signal frequency content, as opposed to the shape or time-varying characteristics of the waveform.
本文提出了一种在加性复高斯白噪声中对单频复正弦信号频率的估计方法。
A method for estimating the frequency of a complex sinusoid in additive complex white Gaussian noise is proposed.
比较了BP神经网络和RBF神经网络在跳频信号频率预测中的性能差异。
It makes a comparison of the performance differences of the BP neural network and the RBF neural network in predicting frequency-hopping signals.
基于DFT和自相关理论，该文提出了一种双正弦信号频率的快速估计方法。
A method, which realizes the fast frequency measurement for dual sinusoidal signals basing on DFT and autocorrelation theory, is given.
该方法包括信号频率实时估计、采样频率同步跟踪和谐波系数误差校正几个要素。
The method consists of real-time estimation of signal frequency, synchronous tracking of sampling frequency and error correction of harmonic coefficients.
叙述分析处理连续波（CW）信号的重要性，并介绍测定CW信号频率特征的方法。
The importance of analyzing and processing continuous wave (CW) signals is described. The method of determining the performance of the CW signals frequency is introduced.
结果表明，随着电激励信号频率的增大，果品的电容、电阻以及损耗角正切值均减小；
The test results indicate that with the increase of frequency, the capacitance, resistance and losses tangent decrease.
适当地选取时延和非均匀阵列阵元位置，该方法的信号频率和2 D到达方向估计无模糊。
With choosing signal time delay and element location of nonuniform array properly, the estimated frequencies and 2 D directions of arrival are unambiguous.
步进电机是一种数字控制电机，它将脉冲信号转变成角位移，电机的转速由脉冲信号频率决定。
Stepper motor is a motor controlled by digital signal, which converts pulse signal into Angle displacement. The wheeling speed is controlled by the frequency of pulse signal.
这虽然只是利用混沌测量未知信号频率的一个理论探讨，但它对实际测量有着重要的指导意义。
This is only attempt to measure the frequency of unknown signal by using chaos, but it is significance to reality measurement.
对调制域测量技术作了简要介绍，探讨了调制域分析仪在复杂信号频率测量分析上的一些应用。
The modulation domain measurement technique is presented simply. The application of modulation domain analyzer in the complicated signal frequency measurement analysis is probed.
本文基于圆阵列及其输出时延提出了一种空间信号频率、方位角和仰角的联合参数估计新方法。
Based on uniform circular array and its elements output signal delay, a novel method for estimation of spatial frequency, azimuth and elevation is presented.
为精确估计噪声环境中的信号频率和幅值，数学证明了全相位DFT优良的抑制频谱泄漏的性质。
To estimate signal frequency and amplitude exactly under noisy circumstances, the excellent property of all-phase DFT restraining spectral leakage is mathematically proved.
因此，让线性化信号频率随弹旋频率的变化而变化，从而改善平均控制力的线性度，提高控制精度。
So we make the frequency of the linearization signal change with the frequency of the missile's autogiration. Then the linearity of the average control force can be improved.
在传统的压缩编码技术中，采样均遵循奈奎斯特定律，该定律规定采样速率要高于原信号频率的两倍。
The Nyquist law is applied to all the conventional compression coding algorithms, which prescribes that the sampling rate must be at least as twice as the signal frequency.
通过对交流电信号采样的讨论，指出解决频谱泄漏的问题的基本方法是保证信号频率与采样频率同步。
Through discussing the samples of ac signal, the basic method to solve spectrum leakage is pointed out, which is to guarantee the same pace between signal frequency and sampling frequency.
基于ASIC的方法与其他频率测量方法相比，MPU外围电路简单，能自适应输入信号频率的变化。
Compared with other frequency measurements, the method based on the ASIC makes use of simple periphery circuit around MPU and can self-adapts the variation of input signal frequency.
这种分析方法提供了时间域与频率域的联合分布信息，清楚地为我们描述了信号频率随时间变化的关系。
As one of the best tools to analyze the non-stationary signals, it shows a good picture in the joint time-frequency domain and makes us know about the change of frequency along with the time clearly.
显然一些电视、无线链路以及甚至一些加密网络都在使用不该使用的信号频率进行传输，这就扰乱了卫星敏感的探测器。
Apparently some TV, radio links and even security networks are transmitting signals where they are not supposed to be, messing with the satellite's sensitive measurements.
显然一些电视、无线链路以及甚至一些加密网络都在使用不该使用的信号频率进行传输，这就扰乱了卫星敏感的探测器。
Apparently some TV, radio links and even security networks are transmitting signals where they are not supposed to be, messing with the satellite's sensitive measurements.
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