查询词典 Signal-to-Noise

Based on the frequency characteristics of absolute time-grating displacement sensor,a new digital signal processing principle of data stream serial/parallel transform was presented.

在分析绝对式时栅位移传感器频响特性的基础上，介绍了一种在数字信号处理电路中的数据串并转换思想，并提出了一种基于串并转换思想的绝对式时栅信号处理电路设计方案。

This paper, with the analysis of the propagation characteristics in a lossy cylindrical waveguide and using small-signal theoretical dispersion relation, presents study on the device stability with influence of the absolute instability and the backward wave oscillation in TE01-mode lossy dielectric-load gyrotron traveling wave amplifier.

摘要该文从分析损耗介质加载金属圆波导中电磁波传输特性出发，应用回旋行波管放大器小信号色散方程，研究损耗介质加载结构TE01模回旋行波管放大器绝对不稳定性振荡和回旋返波振荡对器件稳定性的影响。

Polarimetric Synthetic Aperture Radar measures the frequency, magnitude, absolute and relative phase of targets' backscattering signals in imaging scene for any possible combination of transmit and receive antennas. The polarization synthesis technique on one hand has greatly increased the acquired polarization information, on the other hand increased the difficulty of system design and signal processing.

中文摘要极化合成孔径雷达的回波信号可以提供不同收发极化状态组合下成像场景内目标散射波的幅度、绝对和相对相位、频率等信息，极化合成技术的出现使获取的信息量成倍增加，信息量增加的同时系统设计和信号处理的复杂度增加，因此极化合成孔径雷达相关技术的研究成为微波遥感领域的热点。

Study on the Algorithm of Signal Detection and Separation in Mobile Communication Abstract The code division multiple access system can ...

移动通信信号检测与分离算法研究码分多址技术具有更高的理论系统容量、更多的业务范围和更快的传输速度。

Xi'an Dongfang Mech Group Company Abstract : A high precision data collection system is designed by using 24 bits ADC which has the function of self - calibration and signal processing.

扩散硅压力传感器及变送器参数测试系统：采用具有自校验和信号调理功能的24 位ADC ，开发设计了一种高精度数据采集系统。

Uranium isotope abundance ratio has been measured by total sample evaporation and signal integration, and a thermal surface ionization mass sepctrometry equipped with multicollector has been used.

采用全蒸发技术、离子流强度积分的方式，用多接收器热表面电离质谱计测量铀同位素丰度。

And if you are honest with yourselves, if you come into your heart and feel the vibrations of more subtle plane, then you will clearly hear a disturbing alarm, which is abuzz on the planet Earth. And this alarm is a signal of alert.

如果你对自己足够诚实，如果你进入你的内心，感受更精微层面的振动，那么你将清晰的听到某个警报，在地球上回响的警报。

It collects the picking signal by the wrecked man via the sensor based on the acceleration of gravity.

如何快速、有效地在灾后进行人员救援是减少损失的一个必要环节。

An automatic seismic signal detector based on a fast algorithm of energy spectrum has been developed for digital accelerograph.

我们在能量谱快速计算的基础上，研制成功了用于数字化加速度仪的自动地震信号检波器。对一个连续系统进行了不变数字模拟，该系统被认为是作为单自由度系统加速度计的转换函数。

In the part of the diesel engine control, the position closed loop control system was adopted includes: microprocessor, isolation circuit, power magnify circuit, accelerograph actuator of the engine and the signal modulate circuit.

对于发动机控制部分，详细讲述了采用位置闭环控制的发动机电控单元的几个主要组成部分：微控制器、隔离电路、功率放大电路、油门执行器和信号调理电路等。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。