heterodyne frequency
英 [ˈhɛtərəʊdaɪn ˈfriːkwənsi]
美 [ˈhɛtərəˌdaɪn ˈfriːkwənsi]
网络 外差频率
双语例句
- By means of the heterodyne frequency shift technique and the computer storage technique the sensitivity of beat frequency achieved 1 × 10-4 Hz.
用外差移频技术实现周期的细分，再辅以微机存贮技术使频率差分辨率达到1×10－4Hz。 - Research of Heterodyne Interferometer of High-frequency Vibration
高频振动外差激光干涉仪研究 - An efficient heterodyne frequency method to measure the concentration of oil and water mixture is proposed.
提出了一种利用差拍法测量油水浓度的有效方法。 - Study on Heterodyne Ellipsometry and Error Analysis of Frequency Mixing
外差椭偏测量技术及其混频误差分析 - A noval way based on CPLD was put forward for integral detecting of the processing heterodyne interference signal with mid frequency difference.
提出了一套基于CPLD的中频差外差信号处理的整数检测方案。 - A new method for heterodyne laser interference fringe counting is proposed. After exclusive OR operating with the reference signal, the formal high frequency heterodyne signal is turned to a DC voltage signal.
提出一种新的激光外差干涉条纹计数方法，通过与参考信号的异或运算，将原来高频的外差信号转化为一直流电压信号； - The heterodyne detection is used to detect the output signal frequency difference between the reference arm and sensing arm, which is caused by the temperature variation.
外差探测用来探测传感臂和参考臂由于温度变化引起的输出信号的频率差异。 - Digital adaptive heterodyne filter adopts the heterodyne-modulation conception, which makes the filter work in low frequency and lessens the complexity of design.
数字自适应外差滤波器运用外差调制的概念，使滤波在低频率处操作，从而降低了滤波器的复杂程度。 - In this paper, the noise equivalant power ( NEP) of optical heterodyne system has been measured with a method based on acousto-optici germanium 'crystal modulator working at Bragg diffraction mode as a frequency shifting device in heterodyne system.
本文介绍了利用工作于Bragg衍射的Ge晶体声光调制器作为外差系统中的频移器来测量外差系统的噪声等效功率（NEP）的方法。 - In order to improve the measurement accuracy of a laser heterodyne interferometer, it is necessary to analysis the effect mechanics of optical multiplication frequency on the measurement accuracy of laser heterodyne interferometry.
为了同时提高激光外差干涉测量的分辨力和精度，必须深入分析光学倍频对激光外差干涉测量精度的影响机理。 - We have studied an all-fibre temperature sensor with heterodyne detection scheme theoretically and experimentally, in which PMF and double frequency laser were used. From that we obtained the linear relationships between the phase and temperature.
介绍了系统的实验原理，对应用了PMF和双频激光，具有光外差检测方式的全光纤温度传感系统从理论和实验上进行了原理性探讨，均得到相位读数与温度之间的线性关系。 - Several methods such as filter, dispersive line, and heterodyne for high power microwave frequency diagnosis are introduced and discussed.
本文介绍了诊断高功率微波频率的滤波法、色散线法、外差法的原理及其装置的设计、性能和应用结果。 - A small MEMS component vibration measuring system using heterodyne laser Doppler technology is proposed. The frequency bandwidth is properly determined by analyzing the frequency of Doppler signal.
提出了一种MEMS构件微小振动、位移测量系统，采用外差法激光多普勒技术，通过对信号的频谱分析，确定了信号处理单元的适宜频带宽度。 - A heterodyne interferometer may be used in the displacement measurement with an accuracy of nanometer or subnanometer order. The accuracy mainly depends on the nonlinearity of the ratio of displacement to frequency difference.
拍频干涉法可用于纳米、亚纳米级精度的位移测量，其测量不确定度主要取决于单位频差&位移当量的非线性。 - A High Resolution Heterodyne Interferometer with Transverse Zeeman Laser and Phase-lock Multiple Frequency Technic
锁相倍频式高分辨横向塞曼外差干涉仪 - Based on heterodyne and vector analysis theories, origins and modes of the frequency mixing error and phase jump error were analyzed. On the above basis, procedures to improve the accuracy of the measurement system were suggested.
利用激光外差及矢量分析理论，深入研究了频率混叠误差和相位跳变误差的成因、变化规律，并讨论了提高测量系统精度的有效措施。 - A heterodyne interference is caused by a frequency modulation of a laser diode ( LD) with a ramp injection current, and a linear phase detection is realized.
传感器利用注入结电流直接调频的半导体激光（LD）产生外差干涉，从而实现了干涉相位的线性检测。 - Heterodyne bias frequency-locking of tunable lasers
可调谐外差式激光偏频锁定 - The investigation has laid a solid foundation for the polarization heterodyne fiber laser sensor and its frequency division multiplexing sensor network to apply in future.
为未来基于偏振外差法光纤激光传感器及其频分复用传感网络技术与应用打下了坚实的基础。 - To reduce noise figure and improve receiver sensitivity, the heterodyne receiver model have become more widely available in the communication system. The rejection to image frequency interference has become the last problem for a low-noise receiver.
为了降低系统噪声系数，提高系统接收灵敏度，超外差式的接收机模型在越来越多的通信系统中被广泛的使用，实现整机低噪声、抗干扰的最后难题就是对镜频干扰的抑制。 - According to the characteristics of the raw data obtained by vertical side-looking strip-mode SAL optical heterodyne detection, the traditional Range Doppler Algorithm ( RDA) and Frequency Scaling Algorithm ( FSA) are applied to vertical side-looking strip-mode SAL.
根据正侧视条带模式SAL雷达原始数据的特征，将传统的SAR距离多普勒算法（RDA）和频率变标算法（FSA）进行移植。 - Phase measuring method of filling pulse is studied. While combining frequency-mixing technique of phase locked loop and pulse-filling method, phase demodulation for the heterodyne signal of middle and high frequency is realized.
研究了脉冲填充测量相位的方法，同时把锁相环混频降频技术与脉冲填充法结合起来，实现了中高频外差信号的相位解调，拓展了外差信号的处理技术。