While turning on off the lcd , in few cases , the signal frequency of the vga card will affect the lcd and cause interference 在极少的情况下,萤幕会出现干扰杂纹, 。这种情况可能是vga卡的讯号卡的讯号频率所造成,属于正常现象。
The method , combining the aff with sga , can accurately track the signal frequency and calculate the phase difference between two signals 它将自适应funnel波器和滑动goertzel算法结合起来,能够精确地跟踪信号的频率,计算相位差。
The possibility of gaining reference signal by the use of signal frequency estimation through the approach of adaptive notch filter is studied 通过仿真研究了利用自适应陷波器技术估计信号频率获得参考信号的可行性并通过实验进行了验证。
When the signal frequency is 4688hz , the width of the main lobe of the directivity is 28 degrees and the theoretical value is 26 degrees 指向性测试结果显示,最大值方向和第一对最低点宽度与理论值吻合,主瓣宽度实测28度,而理论值为26度。
The prerequisite of actively mode - locked fiber laser stable work is that the modulation signal frequency must be the integral multiple to the cavity resonance frequency 主动锁模光纤激光器稳定工作的前提条件之一是调制信号频率应为腔内纵模间隔的整数倍。
The whole system is divided into three parts according to the signal frequency , i . e . , rf channel , if modulation and demodulation , digital terminal 并根据信号的工作频段和各分机电路的主要功能,将整机系统分为射频信道、中频调制解调和终端处理三大部分。
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 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。
With the increasing signal frequency and decreasing feature size of modern high speed integrated circuits , interconnect transmission line is playing an increasingly important role 随着信号频率的增加和现代高速集成电路尺寸的减小,作为相互连接装置的传输线正在扮演着越来越重要的角色。
In this dissertation , the analog - digital channelized receiver is studied . the optimized system , spectrum reconstructing and accuracy signal frequency estimation algorithms are researched 本文研究了模数混合信道化接收方案,着重研究其优化结构和关键技术以及线性调频信号参数估计算法。
The movement of the satellites causes doppler frequency to drift , the receiver usually tracks the signal frequency the receiver through phase locked loop , in order to can demodulate the signal 卫星运动造成多普勒频率漂移,接收机一般都采用锁相环来跟踪接收信号频率,以便能正确解调信号。