它的信号放大、处理主要由锁相放大器完成。
Its signal magnifying and processing achieved by lock-in amplifier.
锁相放大器在微弱光电信号检测中有着广泛的应用。
Lock-in amplifiers are used widely in low photoelectric signal detecting.
将制作的锁相放大器应用在了利用声波的相位差定位的系统中。
Then the LIA is used in a system which finds out the location of a sound source.
利用锁相放大器追踪测量信号，微机自动扫描、采集和处理数据。
It USES a lock-in amplifier for testing the signal and a personal computer for automatic data scanning, collecting and processing.
提出了一种用于光纤陀螺信号检测的数字锁相放大器的设计方法。
In this paper, a kind of digital lockin amplifier used in FOG signal detection is designed.
使用锁相放大器提供驱动信号，并同时检测对应于样品形变的输出信号。
A lock-in amplifier is used to supply the driving signal and to detect the output signal corresponding to the sample's strain.
本文提出一种利用低频锁相放大器测量高频信号的混频-锁相检测技术。
The mix-lookin detection technique for high frequency signal measurement with low frequency look-in amplifier is presented.
该采集器尤为适用于双通路锁相放大器的正交矢量运算或双光路测量信号的处理。
This system is used as the data processor of measurement instruments to provide the instantaneous computed function.
借助于锁相放大器的鉴相特性，使该电桥在RLC 参数的快速测量中得到应用。
With the help of loch—phasic amplifer for the chief of distinguish phase, these bridge methods for RLC quantity fast measuring have been applied.
利用锁相放大器SR844对产生的信号进行模拟鉴相，并同软件鉴相结果比较分析；
Used lock-in amplifier SR844 for hardware phase detection and compared with software detection.
如果使用双相位锁相放大器测量交变的被测量，误差将减小到全量程的0.4%以内。
By using a double phase lock in amplifier to measure the AC strain, the measurement error can be decreased to 0.4% of the total measurement range.
在电路设计上采用锁相放大器来提取微弱信号，最大限度的抑制噪声，提高系统的信噪比。
For the signals are very weak, the lock-in amplifier is employed to extract the signals in the circuit design. It can inhabit the noise in the most and maximize the signal-to-noise.
本文用3厘米微波干涉仪，以锁相放大器作检测器，测量了微波通过气体放电管时所引起的相移。
A 3 cm X-band microwave interferometer with a phase-locked amplifier as detector has been used to measure small phase changes as a microwave beam passing through the gas discharge tube.
本文介绍了一种用声光调制器、模拟除法器和自动锁相放大器来改进激光探针测试系统稳定性的方法。
This paper reports a technique used lor improving the stability of the laser probe consisting of an acoustooptic modulator, an analogue divider and an auto-lock-in amplifier.
锁相放大技术对被测信号进行窄带放大，锁相放大器结合示波器输出了被测信号的周期变化部分，实现了光热法测量中微弱信号的测量。
By narrowing the bandwidth of the signal and amplifying it by a lock-in amplifier, the fluctuating components of the signal can be shown on an oscillograph with lock-in amplifier.
根据磁机械耦合系数的测量原理，利用锁相放大器建立了磁机械耦合系数测量系统，并应用该系统测量了巨磁致伸缩材料的磁机械耦合系数。
The measurement system of magnetomechanical coupling coefficient for giant magnetostrictive materials has been built by using a lock-in amplifier, according to the measurement theory.
采用双晶片探头和电子天平对PZT微力传感器进行静态力标定，进而利用双晶片探头和电荷放大器对PZT微力传感器进行准静态标定，微小信号检测通过锁相放大器来实现。
PZT micro -force sensors were calibrated by bimorph and electronic balance in static state and by bimorph and charge amplifier in dynamic state, small signal was tested by amplifier.
第三章至第五章分别介绍了毫米波锁相源、二倍频本振源和低噪声放大器三个系统关键的单元电路的设计过程和测试结果。
From chapter three to chapter five, the three key components of the system: millimeter-wave phase locked sources, multiple frequency local source, low noise amplifier are designed and tested.
第三章至第五章分别介绍了毫米波锁相源、二倍频本振源和低噪声放大器三个系统关键的单元电路的设计过程和测试结果。
From chapter three to chapter five, the three key components of the system: millimeter-wave phase locked sources, multiple frequency local source, low noise amplifier are designed and tested.
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