rf pulse 射频脉冲(12) rf脉冲(6)   射频脉冲      The Requirement of Short Term Frequency Stability of RF Pulse Train for COR, MTI, and MTD Radar      COR、MTI、MTD雷达对射频脉冲序列频率短稳的要求 短句来源      Accelerated Life Tests of P Band Power Transistor Under RF Pulse Condition      P波段功率管的射频脉冲加速寿命试验 短句来源      The ratio of signal to noise for RF pulse sequence with a synchronized discontinuous noise is compared to that for RF pulse sequence with a continuous noise, and to that for RF continuous cosine signal with a continuous noise.      对具有同步的间断噪声的射频脉冲序列的信噪比、具有连续噪声的射频脉冲序列的信噪比和具有连续噪声的射频余弦信号的信噪比进行了比较。 短句来源      A New Method for Measuring the Stability of RF Pulse Series      一种测量射频脉冲序列稳定性的新方法 短句来源      In recent years,the problem of stability of radar system attracts people's great attention with rapid development of MTI and MTD technique,and many meth- ods of measuring stability of RF pulse trains are advanced.      近几年 MTI、MTD 技术迅速发展,雷达系统的稳定性问题也随之引起了人们的重视,提出了不少测量射频脉冲序列稳定度的方法。 短句来源 更多          rf脉冲      30GHz RF Pulse Stretcher      30GHz RF脉冲展宽器(英文) 短句来源      30GHz RF pulse compressor      30GHz RF脉冲压缩器设计 短句来源      RF signal transceiver is an important component of MRI spectrometer. It is responsible for the receive of MR signal and the transmit of RF pulse.      射频(RF)信号收发器是MRI 谱仪的重要组成部分,它负责MR 信号的接收和RF脉冲的调制发射。 短句来源      This sparkle noise appeared just following the RF pulse and had a maximum level of about 40% of maximum RF pulse level.      此尖刺噪声在RF脉冲之后出现 ,具有约4 0 %的最大RF脉冲值。 短句来源      RF pulse oscillator has been developed with microcircuits. The oscillator is characterized by its compact structure,low cost and high performance.      利用微带电路研制了结构紧凑、低成本、性能高的RF脉冲振荡器。 短句来源 更多          “rf pulse”译为未确定词的双语例句      A New System for Measuring the Random Fluctuation of Radar RF Pulse Wave      一种新的射频脉冲波随机起伏测量系统的研究 短句来源      A 30 GHz RF pulse compressor is designed using MSLED II principle to obtain 150ns long 100MW RF pulse.      为得到脉宽150ns,功率超过100MW的30GHz微波脉冲,采用MSLED II原理设计了30GHzRF脉冲压缩器。 短句来源      An approach to realize the multi-radar signal simulator by using TMS320C6416 is presented in this paper. In order to achieve arranging the pulse in time order,the time of pulse arriving is mapped to the address of memory , the RF pulse model of radar is also be described。      提出了一种用TMS320C6416实现多雷达信号模拟器的方法,建立了雷达脉冲参数描述模型,并通过将脉冲的前沿到达时间映射到存储地址来完成对脉冲的时域排序。 短句来源      Simulation results show that the RF pulse sequence optimized by IST and SLR algorithm can improve the signal to noise ratio of MRI considerably      模拟结果表明 ,采用逆散射理论和Shinnar LeRoux方法优化的脉冲序列可以明显提高信号的信噪比 短句来源      In our SLAC type of RF pulse compressor (SLED), the detuning device works not as well as expected.      在北京正负电子对撞机 (BEPC)直线加速器工程中 ,参考美国SLAC微波脉冲压缩技术 ,成功地研制了能量倍增器 (SLED) . 短句来源 查询“rf pulse”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   rf pulse To avoid nonlinear response from the nuclear ordered spin system, which contradicts a principle of conventional MRI, we employed Free Induction Decay (FID) after a small tipping angle RF pulse to obtain the spectrum. 例句来源       On the other hand, it has a severe influence on the appearance of the ordinary spin echo using π/2-π RF pulse sequence. 例句来源       The tipping-angle-dependent frequency shift, which was taken to be the precession frequency immediately following the rf pulse, agreed with Namaizawa's theory. 例句来源       In some cases, a large negative frequency shift of about 2 kHz from the Larmor frequency was observed some time after the rf pulse, after which frequency returned to that observed for a small tipping angle. 例句来源       We observed the large amplitude spin waves after an rf pulse. 例句来源       更多                    Based on the fundamental piezoelectric Christoffel's equation, we derived the expression of the elastic constants for piezoelectric crystal with trigonal symmetry point group 3 m. The ultrasonic wave velocities in LiNbO3 crystal, propagating along different crystallographic directions, are determined by the "pulse echo overlap method". The. carrier frequency of rf pulse is 10 MHz. The Values of the secondorder elastic constants C_(ij)~E and C_(ij)~E for LiNbO3 crystal are obtained as follo...             本文从基本的压电Christoffel方程出发导出三角晶系3m点群压电晶体弹性常数的表示式。并采用10MHz射频超声脉冲回波重合法测量了沿LiNbO_3不同对称方向传播的声速,结合e_(ij)和ε_(ij)~5给出了LiNbO_3全部弹性常数C_(ij)~E和C_(ij)~D。它们是 C_(11)~E=19.89,C_(12)~E=5.25,C_(13)~E=7.81,C_(14)~E=0.96, C_(33)~E=25.44,C_(44)~E=6.10,C_(66)~E=7.32×10~(10)N/m~2, C_(11)~D=21.51,C_(12)~D=3.65,C_(13)~D=7.91,C_(14)~D=-1.41, C_(33)~D=26.10,C_(44)~D=9.62,C_(66)~D=8.93×10~(10)N/m~2。 文摘来源          In recent years,the problem of stability of radar system attracts people's great attention with rapid development of MTI and MTD technique,and many meth- ods of measuring stability of RF pulse trains are advanced.The emphasis of this paper is placed on analyzing the method of measuring stability of RE pulse trains by means of digital technique and the error of measurement.The corresponding for- mulas of error measure are obtained.The results prove this method to have develop- mental possib...             近几年 MTI、MTD 技术迅速发展,雷达系统的稳定性问题也随之引起了人们的重视,提出了不少测量射频脉冲序列稳定度的方法。本文着重从理论上分析了用数字技术测量射频脉冲序列稳定度的方法。并对测量的误差进行了分析,得出了误差量度的公式,结果证明这一方法是有发展前途的。 文摘来源          In this paper, a power spectrum of discontinuous narrow band white noise is analysed, and an expression of the power spectrum is obtained. The ratio of signal to noise for RF pulse sequence with a synchronized discontinuous noise is compared to that for RF pulse sequence with a continuous noise, and to that for RF continuous cosine signal with a continuous noise. It is verified that velocity detection sencitivity limitation of pulsed Doppler radar can approach to that of ...             对间断窄带白噪声的功率谱进行了分析,得到其功率谱的表达式。对具有同步的间断噪声的射频脉冲序列的信噪比、具有连续噪声的射频脉冲序列的信噪比和具有连续噪声的射频余弦信号的信噪比进行了比较。证明脉冲多普勒雷达的速度检测灵敏度,可以达到相应的连续波雷达的速度检测灵敏度极限。 文摘来源   << 更多相关文摘         相关查询: rf pulse compressor rf pulse stretcher high power rf pulse pulse rf rf bandwidth group pulse frequency pulse rf modulator time pulse analog pulse mud pulse  对查询结果不满意

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