heterodyne

1. The Doppler frequency can be obtained as a heterodyne or beat effect.
   由于外差或频差效应，能够得到多普勒频率。
2. Research on Characteristics of Microwave Signals Generated by Optical Heterodyne
   光学外差法产生微波信号特性的研究
3. Research on signal processing system of heterodyne interferometer instrument for measuring surface roughness with high accuracy;
   随着激光外差干涉测量速度的提高，其存在的原理性误差严重影响测量精度。
4. Heterodyne Efficiency and the Effects of Aberration for Space Coherent Optical Communication
   光学／红外线／紫外线导航空间相干光通信外差效率及天线像差的影响
5. Proposed is a double-sheet-metal structure FBG temperature sensor system based on heterodyne detection.
   提出了一种基于外差探测的双金属片结构光纤布拉格光栅（FBG）温度传感系统方案。
6. The nearly common path configuration increases the stability of heterodyne grating interferometer.
   准共光程的光路设计，提高了外差光栅干涉仪的稳定度。
7. The method for multi-beam laser heterodyne high-precision measurement of the glass thickness
   多光束激光外差高精度测量玻璃厚度的方法
8. In order to heighten the manipulative accuracy of the ruled engine, a new measurement system that the grating heterodyne interferometer of auto-collimating type was proposed.
   为提高光电式光栅刻划机的控制精度，设计了一种自准直式激光光栅外差干涉仪的新型测量系统。
9. Virtually all receivers in use today employ Armstrong's super heterodyne concept.
   实际上所有接收器在使用中今天使用阿姆斯壮的超级外差概念。
10. A New Heterodyne Signal Processing Method for Nanometer Measurement
    一种新型的纳米级外差干涉信号处理方法
11. Influence of Characteristics of an AOM on the Measurement Accuracy of a Heterodyne Interferometer
    外差干涉仪中声光调制器特性对测量精度的影响
12. Research on Brillouin-based Distributed Fiber Temperature and Strain Sensing Using Heterodyne Detection and Signal Processing Technology
    外差检测布里渊分布型光纤温度和应变传感及信号处理技术研究
13. Base on the heterodyne laser Doppler theory, a heterodyne laser Doppler vibrometer ( LDV) with fiber structure was designed and implemented.
    基于外差激光多普勒原理，设计并实现了一套光纤结构的外差式激光多普勒振动计（LDV）。
14. To meet the requirement of dam safety in hydroelectric power stations, a kind of optical fiber sensors was designed based on the optical heterodyne technique, and its properties were tested.
    根据水电站水坝安全的要求，利用光外差技术设计了一种监测水坝变形的光纤传感器。
15. Compared with the conventional heterodyne scheme, it avoids the complicated intermediate-frequency tracking system.
    与寻常相干接收方案相比，省去了中频跟踪电子系统；
16. The testing principle of the laser heterodyne measurement system is explained.
    说明了激光外差测量原理。
17. The processing method of heterodyne signals combines integer measurement with fraction period measurement, so it has wide dynamic range and high resolution.
    计大数和测小数周期相结合的外差信号处理方法，实现了大的动态测量范围和很高的测量分辩率。
18. Research on a Simultaneous Measurement System of Temperature and Strain Distribution Based on Heterodyne Detection of Brillouin Scattering in Optical Fiber
    外差检测式光纤布里渊温度和应变分布同时测量系统研究
19. In ideal status, the upper limit of heterodyne efficiency of Gauss local-oscillator and Airy spot signal is 0.82.
    在理想状态下，高斯本振和爱里斑信号外差效率的理论上限为0.82。
20. Heterodyne efficiency is reduced by aberration of receiving antenna for space coherent optical communication.
    空间相干光通信中接收天线像差会使光外差效率下降。
21. Laser heterodyne acoustic sensor
    激光外差式声学传感器
22. The influences of atmospheric turbulence on interference efficiency due to the angle of arrival fluctuation in the laser heterodyne detection system were presented.
    研究了大气湍流情况下到达角起伏对激光外差探测系统干涉效率的影响。
23. This paper analyses and studies the parameter design of a Spatial Heterodyne Spectrometer ( SHS).
    围绕空间外差光谱仪系统参数设计进行了理论分析和实验研究。
24. The expressions of the heterodyne efficiency in the conditions of three kinds of optical mismatch including equiphase surface mismatch, collimation mismatch and deviation mismatch are analyzed.
    分析了三种光学失配情形（等相位面失配、准直失配和偏移失配）下外差效率的不同表达形式，计算了三种失配情形影响下的外差效率变化曲线。
25. Comparative research on spatial heterodyne spectroscopy and FTS
    空间外差光谱技术与FTS的比较研究
26. However, zero IF architecture suffers from greater RF impairment comparing with classical heterodyne architectures.
    但是相对于经典的超外差结构，在零中频结构的接收机中射频损伤将更为严重。
27. Heterodyne Laser Doppler Vibrometer for Underwater Acousto-Optic Communication
    用于水下声光通信的外差式激光多普勒振动计
28. Study on Optical Heterodyne Detection in Synthetic Aperture Ladar Technology
    合成孔径激光雷达中激光外差探测技术研究
29. A back-to-back experimental result is given for a4-channel system, based on which, a down conversion process for heterodyne can be reduced.
    针对4通道接收，我们给出了背靠背实验方案，并且基于此方法，省去了外差系统所需的下变频过程。
30. Influence of Metal-Coated Mirrors on Measurement Accuracy in Heterodyne Interferometric Ellipsometry
    金属反射镜对外差干涉椭偏测量精度的影响

verb

1. combine (a radio frequency wave) with a locally generated wave of a different frequency so as to produce a new frequency equal to the sum or the difference between the two

adj

1. of or relating to the beat produced by heterodyning two oscillations