自由空间

超大的自由空间，与人无限的遐想，这或许是ONE的独特之处。

Large free space , and unlimited source of fascination for people , this is probably ONE of the unique .

TCM信号序列的自由空间距离的矩阵算法

A matrix algorithm for computing the free space distance of TCM signal sequence

必须给青少年充足的自由空间。

You have to give teenagers plenty of space .

一般来说，自由空间中R越大其受湍流影响也越大。

In general , R is more sensitive to turbulence , if R is larger in free space .

自由空间光通信ATP地面模拟系统研制

Ground Simulation About ATP System Design for Space Optical Communication

传统的自由空间光通信系统基于强度调制和直接检测（IM/DD：intensitymodulationanddirectdetection）的调制解调方案。

Traditional FSO communication systems are based on the time-honored modulation / demodulation scheme called intensity modulation and direct detection ( IM / DD ) .

本文从自由空间中的并矢Green函数出发，引入了一种构造平面分层均匀媒质的并关Green函数的新方法。

On the basis of the Green dyadic function for infinite space , a new method is introduced to con-struct Green dyadic function for multilayered medium .

自由空间激光通信系统APT粗跟踪链路功率分析

Power analysis of APT coarse tracking link of free space laser communication system

THz时域光谱系统及自由空间电光取样THz光谱测量

Terahertz Time-domain Spectroscopic Setup and Measurement with Free Space Electro-optic Sampling

自由空间电光取样THz时间分辨光谱测量

Time-Resolved Terahertz Spectroscopy with the Free-Space Electro-Optic Sampling

利用MATLAB为仿真工具，研究了激光在自由空间的传输规律，并绘出了仿真结果。

By using MATLAB as a simulation tool , the regulation of laser transmission in free air is delved and the curves of simulation are shown .

作为实例，给出了高斯信道和衰落信道上的一些TCM信号序列的自由空间距离的计算结果。

As some examples , the results of some TCM signal sequence on additive Gaussian white noise ( AWGN ) channel and fading channels have been presented .

自由空间光通讯（FSO）技术及应用分析

The Technology of FSO and its Application Analysis

自由空间Clos网络的光学实现方法

Implemental method of Clos optical network in free space

利用CCD对自由空间传输的激光进行成像，可得到入射光束的角度信息以实现对发射光束的控制。

The propagating laser in free space was imaged by charge coupled device ( CCD ), so the incidence beam angles information can be obtained for the transmitting laser beam control .

基于惠更斯-菲涅耳衍射积分公式，研究了宽带光束在菲涅耳衍射区的自由空间传输特性，得到宽带光束传输的调制深度与光束带宽Δλ及菲涅耳数F的变化关系。

The free space propagation property of broadband laser beam in Fresnel diffraction area is studied based on Huygens-Fresnel diffraction integral . The relationship between modulation depth , bandwidth Δλ and Fresnel number is obtained .

文中先从自由空间最基本的两类FSS结构出发，介绍了求解它们反射／传输系数的方法。

Firstly , two fundamental types of FSS in free space are studied , and their reflecting or transmission coefficient are solved .

自由空间光子交换无阻塞榕树网络与可重排Benes网络的拓扑等价

Topologically Equivalence of Free-Space Photon Switching Nonblocking Banyan Network with Rearrangeable Benes Network

自由空间光通信（freespaceopticalcommunication，FSO）是一种采用红外激光承载高速信号的无线传输技术，具有成本低、容量大、设计简单、接入方便等优势。

Free space optical communication ( FSO ) is a type of wireless transmission technology which transmission the high-speed signal by infrared laser . It is characterized by the low cost , great capacity , simple to design and convenient to access .

在完成初始的批索引之后，确定有Lucene索引空间两倍大的自由空间。

After the initial batch indexing is completed , make sure that there is twice as much free disk space as the Lucene index size .

PIN和APD光电二极管成为自由空间光通信系统探测器的最佳选择；干涉滤波器和原子滤波器成为自由空间光通信系统滤光器的发展重点。

The PIN and APD photodiode are the best choice of photoelectric detector in the system , and interference filter and atomic filter are the main optical filters in the system .

用自由空间法测量了4种聚合物复合材料样品在X波段（8.2-12.4GHz）的复电磁参数，并用波导测量法进行了验证。

The complex permittivity and permeability of four samples of polymer composite materials were measured in the X-band ( 8.2 ~ 12.4GHz ) by using the free-space method . The experimental data are validated with the help of the waveguide technique .

通过自由空间传播模型和雷达散射横截面（RCS）模型，研究了反向散射射频识别（RFID）装置的最大识别距离。

This paper introduces the study on the maximum identification range of the radio frequency ( identification ( RFID )) device by using the free space propagation model and the radar cross section ( RCS ) model .

提出了一种基于FH序列的自由空间光通信多载波调制（FSO-OFDM）时间频率同步方案。

A timing and frequency synchronization scheme based on FH sequence is proposed for the free space optical communication Orthogonal Frequency Division Multiplexing ( FSO-OFDM ) .

分析了自由空间和非自由空间的路径损耗模型，讨论了UWB衰落信道的统计特性，其中重点介绍了改进的Saleh-Valenzuela模型。

The path-lost model of free space and the statistic of UWB multipath fading channel are analyzed , in which the revised Saleh-Valenzuela model are stressed .

无线激光通信（WLC），又称自由空间通信或者大气激光通信，是一种以激光为载体的点对点通信。

Wireless Laser Communication ( WLC ), also called free space optical communication , is a kind of point to point laser communication .

由于天气状况的变动性和不可控制性，使得大气衰减对自由空间光通信（FSO）产生重要影响，并限制了它的使用。

Because weather condition is changeable and could not be controlled , the effect of atmosphere attenuation on free space optical communication is significant and the capacity of FSO is limited .

该文介绍了自由空间光通信终端机中ATP系统的组成和工作原理，设计了用于ATP系统的精瞄偏转镜、闭环控制器、星上终端二次电源系统，并给出了该系统性能的测试结果。

The constitute and work principle of ATP is introduced . The fine pointing tip / tilt mirror , second power supply system , closed loop controller in the satellite is designed , and the test result of the system performance is proposed .

如果的确需要群集索引，那么可以通过确保有足够的自由空间来使其对插入的影响降至最小：使用ALTERTABLE增加PCTFREE，然后使用REORG预留自由空间。

If having a clustered index is needed , its effect on inserts can be minimized by ensuring that sufficient free space exists : use ALTER TABLE to increase PCTFREE , then REORG to reserve the free space .

基于TMS320F2812的自由空间激光通信快速定位跟踪系统，由四象限探测器、高速放大电路及DSP2812构成。

The fast orientation tracking system with free space optimal communication based on TMS320F2812 consists of four-quadrant detector , high-speed amplificatory circuit and DSP2812 .