它所发送的信号是由一组正交的正弦信号作为副载波，用码元周期为T的不归零方波作为基带码型调制而成的。
The transmitted signals which were modulated is a group of orthogonal sine signals as subcarrier and non-regular zero square waves that the code elements period is t as baseband coded formats.
热型红外传感器应用广泛，它要求在室温条件下工作，在宽的调制频率范围内具有均匀的灵敏度。
Infrared thermal sensors are used in a wide variety of application which require room temperature operation and uniform sensitivity over a wide modulation frequency range.
我们提出采用光学双稳装置来稳定光源输出功率，并将它用于折射率调制型光纤传感器测量液体浓度的实验中。
We suggested to stable the output light intensity by using the bistable optical device and use this new device to measure the density of liquid by refractive index modulation sensor.
推导了非同步型脉冲间隔与宽度双重调制(P I W M)的频谱及其特点。
The frequency spectrum and characteristics of pulse interval and width modulation (PIWM) are derived in detail.
提出了应用于三相电压型脉宽调制整流器的空间矢量简化算法。
A simplified algorithm three-phase voltage source PWM rectifier for space vector modulation was presented.
本文提出了一种线性相位精确重建余弦调制滤波器组的二次型约束设计公式。
We propose the quadratic constrained formulas for the design of linear phase cosine modulated paraunitary filter banks given in references .
介绍了Z JF -1型动力电缆载波设备的组成、工作原理、F SK调制技术及PLD器件的应用等。
The paper introduces the composition, working principle, FSK modulation technology of Model ZJF 1 Power Cable Carrier Equipment and application of PLD.
本论文重点是研究被动型铷原子频标中的调制电路、频率合成电路和倍频电路。
In the paper it was studied that the frequency synthesizer and multiplier and the phase modulation circuit of the rubidium atomic frequency standards (RAFS).
本文介绍了一种结构简单、易于实现的反射式强度调制型光纤传感器。
In this paper, a reflective intensity modulation optical fiber sensor with simple structure and easy design has been introduced.
根据传统光学干涉原理研制出的相位调制型光纤传感器，其突出优点是灵敏度高。
The optic fiber sensors of phase modulation type developed by the interference theory in traditional optics are high sensitive.
试制了一台基于迈克耳逊干涉仪的空间调制型干涉成像光谱仪原理样机。
A spatial modulation imaging spectrometer based on the Michelson interferometer is trial-developed successfully.
介绍了一种脉宽调制型功率因数测量电路的工作原理。
Introduced the principles of pulse modulating circuit for measuring power factor.
结果表明，性能比较理想的是高斯型包络的调制脉冲和升余弦包络的调制脉冲。
The simulation results show that the relatively ideal pulses are modulated pulses with Gaussian envelope and rectified cosine envelope.
对采用方波频率调制数字闭环谐振型光纤陀螺中克尔效应的影响进行了深入的理论分析。
The influence of Kerr effect to close-loop digital resonator fiber optic gyroscope based on square-wave frequency modulation was analyzed in theory.
针对电压源型空间矢量脉宽调制逆变器的死区效应，提出了一种根据电流矢量判断电流极性的死区补偿方法。
Aimed at dead time effect of voltage-fed space vector pulse width modulation (SVPWM) inverter, a novel compensation method detecting current polarities from the current vector was presented.
介绍了电压驱动型脉宽调制器件TL494的脉宽调制特性，并对其在半桥变换开关电源中的应用情况做了分析。
The pulse width modulation character of voltage drive -type pulse width modulator TL494 is introduced. The applicable situation of TL494 in semi -bridge alternate switch power is also analyzed.
在强度调制型光纤传感器中，光源发光强度和光电接收器工作的稳定性，是决定测量精度的关键因素。
In intensity-modulated type optic fiber sensors, luminous intensity of a light source and operating stability of photoelectric receiver are the key factors for determining measuring accuracy.
研究了反射式强度调制型光纤传感器中反射面的形状对光强调制特性的影响，推导得出了含反射面形状因子的光强调制函数。
In a reflective fiber optic displacement sensor, the influence on intensity modulation property caused by the reflector shape was studied theoretically with the mathematic model found.
将脉冲阶梯调制技术应用到逆变器领域，提出了基于脉冲阶梯调制的级联型逆变器。
The Pulse Step Modulation is applied to inverter, and a cascaded inverter based on pulse step modulation is presented in this paper.
本文介绍了以电流控制型脉宽调制芯片uc 3842构成的开关电源的原理，分析了其保护电路的缺陷，并提出了一种改进的思路。
The paper introduces the principle of switch power which is composed by current control type PMW UC3842 and analyzes the shortage of protective circuit and proposes an improving idea.
讨论了MPPM（多脉冲位置调制）在无线光通信中的应用，同时提出了一种改进型多脉冲调制方式——（IMPPM）。
The application of MPPM(Multi-Pulse Position Modulation)in optical wireless communication was studied in this paper, and a new modulation technique described as Improved MPPM(IMPPM)was presented.
本文提出了一种应用于民用工业无线测控系统的数据泵型无线调制解调器的设计思路与硬件电路。
The paper puts forward design thought and the circuit as to the modem that is applied to the telecontrol and telemeter in civil industry.
在磨削过程中，由于砂轮不平衡引起再生调制，在此基础上，提出了一种新的混合型颤振再生调制型颤振。
Based on the analysis of the regenerative modulation caused by the unbalance of grinding wheel in the grinding process, a new mixed grinding chatter, named regenerative modulating chatter is advanced.
本论文在第二部分从不同方面详细介绍了反射式光强调制型光纤加速度计的基础理论，并由此提出了一种新型的加速度计测量方案。
In second part of this paper, base theory of the fiber optic accelerometer is presented in details, according to the principle of reflective intensity modulations new experimental scheme is described.
本文介绍一种脉宽调制型(PWM)逆变器异步电机变频调速系统稳态分析的直接数字计算方法。
A kind of direct numerical calculation method for the steady-state analysis of PWM inverter-fed induction motor drives was presented.
设计了以TMS320F 240为核心的控制系统，为了控制焊机的输出功率和焊机的输出外特性，设计采用了脉宽调制型控制方式。
A control system based on TMS320F240 was designed. PWM control mode was adopted to control output power and output characteristic of the machine.
强度调制型荧光光纤温度传感器具有其它光纤温度传感器所不具有的优点。
The optical liber intensity-modulated temperature sensor is better than other optical fiber temperature sensors in some aspect.
提出了一种基于强度调制型空间光调制器(SL M)的并行激光直写系统，建立了该系统的数学模型。
An innovative parallel laser direct writing system based on intensity modulating spatial light modulator (SLM) is proposed, and the math model about this system is established.
提出了一种基于强度调制型空间光调制器(SL M)的并行激光直写系统，建立了该系统的数学模型。
An innovative parallel laser direct writing system based on intensity modulating spatial light modulator (SLM) is proposed, and the math model about this system is established.
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