信号经过角度调制后，频谱结构将发生变化，频谱分析是处理信号的重要步骤和必要的保证。
The signal, after the Angle modulation, would change in its spectral structure. And the analysis on its frequency spectrum is an important and necessary step for signal processing.
常用的调制方式使用正弦波作为载波并对其进行幅度调制(AM)和角度调制即调频(FM)或调相(PM)。
In frequently used methods, sine wave is used as carrier with amplitude modulation (am), frequency modulation (FM) and phase modulation (PM) implied.
因此，在调制式旋转导向工具中，就必须设置一个不受钻柱影响的、可以自动保持和调整工具面角度的稳定平台。
So, it is necessary to have a stabilized platform in the tool to obtain steady angle adjustable and independent to the rotation of drilling string.
从通信系统的角度分析了汽车载波通信系统应该采取的策略，包括有信号的编码、解码，调制、解调，及接收端策略。
Analyzing the automobile carrier communication system from the communication point, including signal coding, decoding, modulating and demodulating and the receiver strategy.
另外，我们通过全局和本地坐标系中观测角度的转换实现了倾斜调制。
In addition, tilt modulation was simulated through the observation Angle transform between.
通过采用流动显示、PDA、PIV 等多种先进测试手段从定性到定量，从单点时均到全场瞬时，从多个角度深入探讨了两相圆湍射流中近喷口区域颗粒相对气相调制规律的物理机制。
The physical mechanism of the modulation law from the particle-phase to the gas-phase was discussed from several points of view by means of flow visualization, PDA and PIV measurement.
从随机脉位调制脉冲多普勒雷达信号调制角度出发，又引入了具有类随机性的混沌信号作为其基本调制信号，性能与采用随机信号相接近。
From the point of view of the modulation of RPPM, chaotic signal with stochastic characteristics is introduced as its modulation, which has the good performance just like the random signal.
本文从提高无线移动传输系统传输速率和对抗多径的角度，研究OFDM调制技术在无线移动通信中的应用。
The thesis researches the application of OFDM modulating technology on mobile communication based on improving transfer effect in limited band broad and overcoming Multi_path fading.
本文就大气保护制冷行业的关系并从保护臭氧层、大气变暖的角度，论述了空调制冷行业与环保的关系。
This paper states relationship between air - condition refrigeration and environmental protection from the aspects of protecting ozonosphere and warming up of atmosphere.
本章首先分析了各种数字载波调制方法，从调制信号信噪比的角度分析说明基于相位调制的方法适合作为双绞线载波调制的方法。
From signal to noise ratio analysis of the modulation signal, we choose the phase modulation method as the suitable carrier modulation for the twisted-pair.
如何测量回波的多普勒频移，实现测流速的目的。 文中从二维信号矢量的角度分析了多普勒频移调制和解调的过程，推导出提取速度信息的信号处理方法。
Using two-dimensional signal vectors, the process of Doppler shift modulation and demodulation is analyzed, and a signal processing method for extracting flow speed information is derived.
本文介绍了死区产生的两大要素，并从调制信号串扰的角度对死区产生的机理进行分析。
The two factors which lead to dead zone are discussed, and the reason for dead zone is analyzed from the modulation signal crosstalk.
本文从变频器电动机组成的系统角度出发，研究逆变器开关方式与电机磁场的关系及SPWM调制下电动机磁场的生成特点。
The relations of SPWM inverter switching model and motor field, and motor field characteristics in this circumstance are re-searched.
从理论和实验角度研究了调制脉冲特性、调制器承受激光辐照能力及门控触发电平的同步性。
The characteristic of laser pulse, damage thresholds of chopper and synchronization of TTL trigger are evaluated by theoretical analysis and experimental measurement.
从结构简单、价廉和实用的角度考虑，近年来，国内外石油勘探和军事反潜等领域提出了研制基于光强度调制原理的水声检波器的想法。
The phase interferometric hydrophone of the all is investigated most extensively, and its applied ranges have extended to the engineering and civil fields instead of the pure military use.
调制传递函数的测量中，采用倾斜刀口作为分析对象，与传统的竖直刀口采样相比，省掉了角度调整装置，并且提高了采样频率。
In the MTF measurement, the object is slant edge, compared with old edge measurement, it has no Angle adjustment device, and improved sampling frequency.
调制传递函数的测量中，采用倾斜刀口作为分析对象，与传统的竖直刀口采样相比，省掉了角度调整装置，并且提高了采样频率。
In the MTF measurement, the object is slant edge, compared with old edge measurement, it has no Angle adjustment device, and improved sampling frequency.
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