wave frequency

The stealth weapons can be detected. The conventional long wave but lower frequency radar can detect the threat target of low visibility. The laser radar, the photoelectronic detection and the radar component have the ability to detect stealth target.

隐身兵器并非不可探测，采用常规的长波低频雷达可以探测低可见性目标，采用激光雷达、光电探测和雷达组网等均具有探测隐身的能力。

Precision Measurement of Submillimeter Wave Frequency

亚毫米波频率的精密测量

The Design of a New Type Short Wave Frequency Synthetic Device

新型短波频率合成器设计

Simulation of Saw-tooth Wave Frequency Modulated Radio Ranging Fuze Under Autodyne System

自差体制锯齿波调频定距引信的仿真

These techniques consequential several vehiclesDetector: Loop Detector, wave frequency detector, video detector.

这几种技术下相应产生的几种车辆检测器：环形线圈检测器、波频检测器、视频检测器等。

An approach of long term wave fatigue analysis for deepwater drilling riser is presented, which can be used to calculate the long term fatigue of drilling risers subjected to 1st order wave force, wave frequency vessel motion and 2nd order low frequency vessel motion.

提出一种深水钻井隔水管波致长期疲劳计算方法，用以计算一阶波浪载荷和波频钻井船运动以及二阶低频钻井船运动引起的长期疲劳。

And the effect of the wave parameters and structure parameters such as wave height, wave frequency, the floating body cell length, floating body cell width, joint transmission ratio, weight block location are studied.

开展了波浪特性参数与关节结构参数对关节获能特性的影响研究，其中包括：波高、波浪频率、浮体单元长度、浮体单元宽度、关节传动比、配重块位置等。

Miniature passive hydrogen maser is developed at Shanghai Observatory cavity design and square wave frequency modulation.

介绍了上海天文台被动型小氢钟的设计和研制,给出了初步的测试结果.

There is a characteristic spiky fine structure in the scatter spectrum, which is of the dust-acoustic wave frequency shift.

散射功率谱在尘埃粒子声波频移处出现特征峰。

Research on the Rayleigh wave frequency spectrum analysis method

瑞利波频谱分析法的研究

Radio frequency ( RF) wave current drive is one of the main ways for control of tearing mode instability.

射频波电流驱动是可以有效地抑制撕裂模不稳定性的方法之一。

Research of construction of short wave frequency hopping pattern

短波跳频图案构造的研究

The Effect of Sound Wave Frequency on the Human's Auditive System

声波频率对人的听觉系统的影响

The emphasis is placed on wave form synthesis target discrimination based on natural frequency.

重点介绍基于自然频率的波形综合雷达目标识别方法。

The paper mainly researched in sampling and storing echo signal of the millimeter-wave frequency stepping radar and signal processing. The echo signal is used for the Inverse Fast Fourier Transform to obtain the target one-dimensional distance diagram, and gain the target distance, and so on.

本文主要研究毫米波频率步进雷达目标回波信号的采集存储和信号处理，对目标回波信号采用IFFT脉冲压缩处理得到目标一维距离成像，提取目标距离等信息，并利用MFC编程实现这一过程。

Sleep is divided into REM and four stages of non-REM; each has a distinct brain wave frequency.

睡眠过程可分为快速眼动阶段和四个非快速眼动阶段，每个阶段的脑波频率都不一样。

A Sine Wave Frequency Estimator with Improved Precision in Low Signal-to-Noise Rate

低信噪比下的提高正弦波频率估计精度算法

For very high frequency clocks, a surface acoustic wave ( SAW ) oscillator is preferable.

对于非常高的频率时钟, 用声 表面波 振荡器更好.

Ultrasonic is one of mechanical wave with wave frequency scope 20-106 KHz, Using Ultrasonic to accelerate or generate a new reaction is its new pattern arisen intercross course.

超声波是频率范围20-10~6KHz的机械波，利用超声波来加速或引发新的反应是一门新兴的交叉学科。

It is found that temperature wave frequency at a given location in the slab is relevant to slab's thickness and its thermal relaxation time while the amplitude of temperature wave bears a relation with heat source's distribution area and pulse duration.

研究结果表明，温度波动频率取决于平板厚度和材料的热弛豫时间，而其幅值则与内热源释放区域的大小和脉冲宽度的长短有关。

Short Wave Frequency Management System

短波频率管理系统

In television, a zigzag distortion. Simulation of Saw-tooth Wave Frequency Modulated Radio Ranging Fuze Under Autodyne System

在电视技术中，图象的锯齿形畸变。自差体制锯齿波调频定距引信的仿真

The Effects of Step Frequency and Conical-scan Antenna on the Target Echo Wave Signal

频率步进圆锥扫描体制天线对目标回波信号的影响

Study on Sine Wave Frequency Estimation Method Based on DTFT

基于DTFT的正弦波频率估计方法研究

Expenses for repairing and maintenance were reduced after the frequency sound wave deashing device was used.

经采用低频声波清灰装置,减少了检修和维护的费用.

Using the wave height gauge and laser Doppler velocimetry ( LDV), experimental results show that the jet flapping motions indeed lock in to the wave oscillations if the wave frequency is close to but lower than the nature frequency of jet flapping motion.

同时，波高计和多谱勒激光测速仪的测量结果显示，当表面波的频率接近但低于射流振翅运动的自然频率时，射流振翅运动的实际振动频率将被锁定在表面波的频率上。

However, Rayleigh Wave is the right way for the formation velocity by its frequency characteristic.

而瑞利面波的频散特性能较好地解决地表层速度.

【 Results 】 Brain wave frequency in ADHD group was obvious slower than that of control group ( P < 0.05).

【结果】ADHD组儿童脑电频率明显慢于正常对照组（P

The thesis adopts triangle wave compare control and monopole frequency doubling PWM mode.

本文采用三角波比较的电流控制方法,逆变器输出采用单极倍频的脉宽调制方式.