调制的

Bandwidth Efficient Constant Envelope Continuous Phase QPSK Modulation ［J］.

带宽有效包络恒定的连续相位QPSK调制［J］。

A method is presented based on tangent relationship and phase modulation technique for dynamic small angle measurement.

提出一种基于正切关系和相位调制技术的动态小角度测量方法。

Influence of dispersion compensation schemes on phase noise of phase modulation system.

色散补偿方式对相位调制系统中相位噪声的影响。

This paper introduces the modem theory and process of the digital phase modulation first.

论文 字数：17407 页数：51）摘要：在以前的数字蜂窝系统中，往往采用FSK、ASK、PSK等调制方式。

Chapter 2 treats the design of digital phase modulation system in frequency hopping mode communication.

第二章说明了跳频传输模式下数字相位调制系统的设计。

Continuous Phase Modulation is widely used in wireless communications especially in military communications due to its high power and bandwidth efficiency.

连续相位调制以其较高的功率有效性和带宽利用率，在无线通信领域尤其是军事通信领域得到广泛应用。

Therefore, the phase modulation formats are very suitable for the upgrade of the transmission systems.

故相位调制格式成为系统升级首选的传输技术。

Based on the construction pattern and the control principle of stepmotor,fractional step angle control of stepmotor is achieved by PWM Phase Vector Cornposition.

本文根据步进电视的结构与控制原理，提出一种PWM式相矢量合成分数步距角控制方案。利用脉宽调制方式来实现各相平均电流。

It is Consisted of modulation circuits,electrical optical converting, photodetector, equalizing amplifier and filter etc.

其中包括信号的调制电路、电光变换、光检测器、均衡放大器和滤波器等。

MTF, in the physical optics theory, is a synthetical evaluation index of imaging performance of optics system.

引言调制传递函数MTF在物理光学中，是光学系统成像性能的综合评价指标。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。