experimental research of dbs imaging based on airborne pulse doppler radar

design of image simulation of airborne pd radar based on vega

基于Vega的机载脉冲多普勒雷达图像仿真设计

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mitral inflow velocity e, a and e/ a ratio were detected.

在二尖瓣口用血流脉冲多普勒法（PWD）测舒张期血流E峰、A峰、E/A比值。

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the pulse doppler ( pd) radar is used widely in the airborne radar because of its superior performance.

脉冲多普勒（PD）雷达由于其优越的性能在机载雷达中得到广泛应用。

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the random binary phase code phasing pd fuze is a novel modulated system of noise.

随机二相码调相PD（脉冲多普勒）引信，是一种较为新颖的噪声调制引信体制。

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the property of airborne pulsed doppler radar and the methods of counter countermeasures

机载脉冲多普勒（PD）雷达的工作特点及抗干扰措施

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a c-band pulse doppler weather radar receiver is described in detail in this paper.

介绍了一种C波段脉冲多普勒天气雷达接收机。

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instead, turn to your kitchen cupboard for beauty concoctions.

反而应该从你家厨房的橱柜里找美容用品。

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at present, the advanced kitchen cupboard market of beijing is still at elementary developing stage, very large development space exists.

目前，高端厨柜市场仍处在初级发展阶段，存在很大的发展空间。

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for instance, dr. szymanski told me, he likes all the glasses in his kitchen cupboard lined up a certain way.

比如，Szymanski先生告诉我，他喜欢将厨房的所有玻璃杯以特定的方式摆在橱柜里。

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he forcefully took the teapot out of her arms and put it on top of a kitchen cupboard, where she couldn't reach.

他强行把那个茶壶从她怀里抢出来，放到了橱柜的上面，她够不到的地方。

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the captain's cook was a crook because he took the clock locked in the captain's kitchen cupboard.

船长的厨师是个骗子，因为他拿走了锁在船长厨房食柜的钟。

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the very first place that the city mouse took the country mouse to see was the kitchen cupboard of the house where he lived.

城里老鼠带着乡下老鼠参观他的住所。第一个点就是厨房的食品柜。

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secondly, on the basis of the scope of agricultural machinery's traveling speed, incremental rotary encoder ( 360rpm) is used as speed sensor in order to approach to transient speed.

第二，根据农机具工作的速度范围，为了得到尽量接近瞬态的速度测量效果，选择每周输出360个脉冲的增量式光电编码器作为速度传感器。

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magnetic encoder investigation with zero pulse signal

零脉冲高分辨率磁编码器的研制

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collect the mechanical rotary information by encoder, use high-precision clock pulses of 50m to calculate the pulse width of the encoder, and analyse the data with fft spectrum and cepstrum analysis.

采用编码器采集机械的旋转信息，利用频率为50M的高精度计数脉冲来计算编码器脉冲的宽度，并对所采集的数据做FFT频谱和倒频谱分析。

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in the digital servo system applying increment photoelectricity pulse coder as feedback element, precise measurement of initial position of motor rotor is an important problem, its principle and realizing method are presented in this paper, the measurement results are also given.

以增量式光电脉冲编码器作为反馈元件的数字式交流伺服系统中，精确地测量电机转子的初始位置是一个重要的技术难题。详细介绍了其基本原理和实现的方法。

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for the sake of simplicity and low cost, in some closed-loop position and velocity control system design, we use the hall sen-sor to produce position and velocity feedback signal, thus do not need the optoelectronic pulse encoder.

在闭环的位置和速度控制系统的设计中，为了使系统简单可靠和成本低，倾向于只用电机自身的霍尔传感器的信号进行位置和速度反馈，不需要另外安装别的检测元件如光电脉冲编码器等。

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the working principle of pulse encoder is analyzed, and its two application modes are discussed for the automatic non-destructive testing ( ndt) of metallurgical tubes and bars.

分析了脉冲编码器的工作原理，并讨论了它在金属管棒材自动无损检测中的两种应用方式。

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an interfacing circuit which makes the incremental pulse encoder working with microcomputer for absolute position measurement is introduced.

介绍一种接口电路，使增量式脉冲编码器与微机联合使用，实现绝对位置的测量。

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the close loop system of frequency conversion adjusting speed is based on non-speed feedback equipment or pulse coder.

变频器转速闭环变频调速系统设计采用无速度反馈装置或脉冲编码器。

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