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- When the square wave signal pass the LPF,we can get the sine signal. 经过分析可知,检测过程中的低通滤波器对检测的精度和速度有重要影响。
- The DDS, Direct Digital Synthesizer, which is implemented by a unique FPGA IC, can provide the stable sine signal with digital AM, FM, ASK, PSK modulation. 仅用单片FPGA就实现了直接数字频率合成技术（DDS），产生稳幅正弦波，并在数字域实现了AM、FM、ASK、PSK等四类调制信号。
- The correctness of the condition is verified through extracting the little wave transients overlapped on the sine signal by shifting the time center of the transients. 通过改变微小波形的时间中心相对于正弦信号的位置提取正弦信号中叠加的微小波形，验证了小波消失条件的正确性。
- At the same time, the sine signal which intermixes noise is detected, and the precision and affecting factors of phase difference measurement are analyzed. 针对混有噪声的正弦信号，分析了检测精度及影响精度的因素。
- The processing technique based on double channels of perpendicular retains information of the range and phase of signal. The no theory error measurement of audio sine signal active power with this method is achieved. 正交双通道处理技术保留了信号的幅度和相位信息,用这种方法可以实现无理论误差地测量音频正弦信号有效功率。
- MCU AT89C51 is adopted to control DDS chip AD9850 to produce the sine signal which frequency may be adjusted. The pure signal can be obtained through the low pass filter,and then target signal is drove by the power amplifier. 采用单片机AT89C51控制DDS芯片AD9850产生频率可调的正弦信号,并通过低通滤波器得到纯正的信号,最后经过功率放大驱动电路输出目标信号。
- DG1000 series function / aleatoric and undee generator operates direct figure to synthesize (DDS) science and technology, can generate stable, accurate, pure and low lack fidelity sine signal. DG1000系列函数/任意波形发生器操作间接数字分解（DDS）科技，可生成不乱、切确、污浊和低失真的正弦信号。
- In order to measure the torque and rotational speed, changes the torque and the rotational speed signal into electric signal of two sine signal through the torque speed probe of Model JCZ. 摘要为了测量转矩和转速，将转矩、转速信号通过JCZ型转矩转速传感器转换成两路正弦信号的电信号的进行测量；
- The principle of utilizing digital correlation method to detect the phases of the two sine signals with the same frequency was discussed. 介绍了采用相关分析法测量两路同频率正弦信号相位的数字化方法基本原理。
- The hearing is adjourned sine die. 审讯被无限期地推迟。
- Whole frequency detection method of the weak sine signal 微弱正弦信号的全频域检测方法
- A Method of Getting Range, frequency and Angle of Sine Signal 一种确定正弦信号幅度、频率、相位的方法
- Patience is a sine qua non for a good teacher. 做个优秀教师必不可少的条件是要有耐心。
- A red light is usually a signal of danger. 红灯通常是危险的信号。
- Sampling Theorem for Bandpass Signal Disturbed from a Sine Signal 正弦信号干扰下带通信号的采样
- Research of Measuring nV Grade Sine Signal Using Chaos System 混沌系统测量nV级正弦信号方法的研究
- Weak Sine Signal Detection Based on Change of Phase Trace 基于相轨迹变化的微弱正弦信号检测
- I stood watching for the signal to change to green. 我站着等待交通信号转为绿灯。
- Let's set the clock by the radio time signal. 咱们照着收音机的报时信号把钟对一对。
- Study on chaotic detection method of nV-level sine signal 纳伏级正弦信号的混沌检测方法研究
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
