frequency space的例句大全

simulation results show that the estimation performance of factor k and doppler frequency offset is stable, which makes them space-domain fine features. 2. spatial location feature is extracted using high-precision spectral-correlation time difference estimation method combined tdoa target position algorithm.

仿真结果表明：莱斯因子和多普勒特征性能稳定，能够作为空域细微特征。2、利用精度较高的循环谱时差估计方法，结合TDOA目标定位算法，提取了空间位置特征参数。

frequency sharing criteria between line-of-sight radio-relay systems and space radiocommunication systems

视距微波接力通信系统与空间无线电通信系统共用频率的技术要求

The present Web mining technology, especially the core algorithmic of Web document classification and clustering are based on statistical word frequency Vector Space Model ( VSM).

目前Web挖掘技术中，特别是Web文本的分类、聚类，采用的核心算法是基于词频统计的矢量空间模型算法。

graphic presentation of properties of time, frequency, and space responses of inducted and radiated em field.

图示感应与辐射电磁场时域、频域、及空域响应之特性。

based on the data of 2 min geomagnetic total field observation in beijing and its adjacent areas, the frequency spectrum characteristic and the time-space variation of amplitude ratio of frequency spectrum for beijing station and other 11 temporal stations are analyzed.

应用北京及邻区2min采样的地磁总场观测资料，分析了北京台与各临时台地磁总场的频谱特性与频谱幅比的时空变化。

preliminary study by using adjustable optical cone system to obtain big space frequency content of satellitic pictures

用可调光锥系统获得卫星照片大尺度空间频谱的初步研究

study on blackout in near space hypersonic vehicle radio frequency communication

近空间高超音速飞行器射频通信黑障研究

Laser holograms are based on laser interference, the use of space frequency of noodles.

激光全息图是根据激光干预道理, 诳骗不满间频率编码的办法制息而不败.

Graphic Presentation of Time , Frequency , and Space Responses of Signals and Circuits.

图示讯号与电路之时域、频域 、 及空域响应.

Anticollision Algorithm for Radio Frequency Tag Identification Tag in Three-Dimensional Space

三维空间下的射频识别标签防冲突算法

An adaptive orthogonal frequency division multiplexing ( OFDM) scheme is described with a simple space time coded transmit diversity for frequency selected fading channel by combining adaptive modulation with spacial diversity.

将自适应调制技术和空间分集技术有机地结合起来，提出了一种与简单空时编码发射机分集相结合的恒定比特率自适应正交频分复用（OFDM）方案。

Introduced the space-time frequency shift keying and the convolutional code theory in detail.

详细地介绍了空时频移键控（ST-FSK）调制解调理论和卷积码编码、维特比译码理论。

We shall be glad to know the time of transit and frequency of sailings, and whether cargo space must be reserved; if so please send us the necessary application forms.

我方想了解航期、航行时间以及是否需预订货舱，如需预定货舱请提供所需的托运申请单。

Amplification of P waves a layered half-space was analyzed by direct stiffness method in frequency domain.

采用直接刚度法,在频域内求解了层状弹性半空间中入射平面P波的场地放大效应问题.

Using a complex analytical signal representation, the free-space propagation properties of ultrashort pulsed Bessel-Gauss beams whose waist width is independent of frequency are studied.

使用复解析信号法研究了束宽与频率无关的超短脉冲贝塞尔-高斯光束在自由空间的传输特性。

The frequency domain model of its control system is studied using state space average method.

分析了通信电源倍流整流电路的工作原理,应用状态空间平均法建立了倍流整流电路的频域模型.

This test system includes three sub-systems which is Telemetered data interpret subsystem, Radio frequency automation test subsystem and Baseband automation test subsystem. The goal of designing this system is to establish a test platform of general space data.

该系统包含遥测数据判读、射频自动化测试与基带自动化测试三个测试子系统，本测试平台的建立可基本满足现有国内星基遥感数传系统的测试要求，且具有平台通用性。

Double space vector modulation and overmodulation of matrix converter were proposed in this paper to ensure the matrix converter switching frequency to be fixed and fast dynam-ic torque response.

结合矩阵变换器双空间矢量调制方法，并将矩阵变换器过调制方法用于感应电机直接转矩控制中，达到矩阵变换器开关频率恒定和电机快速转矩响应的目的。

On the basis of existing space-time block code, frequency diversity is studied and a new space-time-frequency code is further designed and applied in the OFDM system, which encodes information in spatial, temporal and frequency domain.

在现有的空时分组码的基础上，研究频率分集进一步发展设计了新的在空间、时间、频率域上三维编码的空时频码，并将其应用于OFDM系统中。

Also RCS results of radar wave vary in different polarization state, and the polarization characters have tight connection with frequency characters and space characters.

另外，在雷达波的不同极化状态下，将出现不同的RCS结果。实际上，目标的极化特性与其频率特性和空间特性的联系十分密切。