结果表明系统的有效通信距离为300米左右。
本文给出激光大气通信距离方程的一种简化形式。
A simplified form of range equation for laser communication in atmosphere is given.
从模拟信号转向PWM可以极大地延长通信距离。
From the analog signal to PWM can greatly extend the communication distance.
激光大气通信距离受多种因素的制约，通常仅数公里。
Laser beam can only travel a few kilometers through the atmosphere because of some limiting factors.
现代通信系统要求通信距离远、通信容量大、传输质量好。
Long distance, large capability and high quality of transmission are required in modern communication system.
该方式具有抗干扰能力强、通信距离远、可靠性高等特点。
It has the capability of rejecting interference, the ability for long distance and is very reliable.
本文概述了超高频电波在陆地上的传播特性和传播方式及视距和通信距离的计算；
In this paper, the transmission performance and transmission manner of superfrequency electric wave and the calculations of stadia and communication distance are discussed.
在分簇的过程中，可增大节点的有效通信距离进而简化簇结构和减少组网的时间。
In the cluster process, the the structure simplify and the time-consumption reduce accordingly as the effective communication distance enlarges.
实验表明该串行通信方法通信距离长，传输数据准确可靠，具有一定的实用价值。
The experiments showed that the method is long distance in communication and reliable in data transmission and has practical value.
定性分析了流星突发通信中的最佳通信距离，分析结果与前人的实验结论基本一致。
First analysised qualitatively the optimal distance in meteor-burst communication, which was consistent with the experimental result obtained by the previous scholar.
第三章对无线电频率的信道进行了性能分析，结合本工程的通信距离进行了分析、比较。
The properties of radio frequency's channel are analyzed in chapter 3, and comparison is made using the communications distance in this project work.
通过削除弱相干光源中的两光子脉冲，降低多光子脉冲的影响，从而提高安全通信距离。
The probability of multi-photon pulse in weak coherent source can be decreased by canceling two photon pulses to improve the security distance.
短波通信以其机动灵活、抗毁性强、通信距离远等特殊的优点重新引起人们的研究兴趣。
People show great interest in shortwave communication for its special merits such as flexibility, not easily be destroyed and long propagation distance.
通过对两种组网机制的定量分析，雷达自组网在数据冗余和通信距离方面具有一定的优势。
Through quantitative analysis of the two mechanisms, the radar self-organizing networking shows its superiority on transmission distance and redundancy.
短波通信具有的机动灵活和通信距离远等特点，使得它在军事通信中具有十分重要的地位。
Due to the flexibility and the ability of long distance transmission, HF communication plays an important role in the fields of military communication.
PLC和远程I/O模块之间的控制和通信通过CAN总线来实现，其通信距离可以达到几百米。
The controlling and communication between the PLC and the remote I/O modules are used by the CAN bus, the distance can be several hundred meters.
系统智能化要使系统能根据通信距离自适应调节功率，根据信道占用情况随机自动选择通信信道。
This intelligent system consists of an auto-adjust power controller according to communication distance and an auto-select channel chooser interrelated with current transmitting channel.
智能化开关柜对内部各智能化模块的通信网络的通信速度、通信距离、抗干扰性都有严格的要求。
There are strict requests for communication speed, communication distance and anti-interference capability of the communication network in intelligent switchboard system.
这些现场总线之间没有兼容性，开放性不强，而且其传输速率不高，通信距离也限制在几千米以内。
These Fieldbuses which are not completely opening to each other are incompatible and their transfer rate is low, further more the communication distance also limits within several kilometers.
本文重点介绍了雾衰减的经验模型，仿真分析了0.85和10.6在衰减系数和通信距离上的差异。
This article introduced the attenuation empirical model in fog, Simulation analysis the difference between 0.85 and 10.6 in coefficient of attenuation and communication distance.
脉冲位置调制(PPM)是大气激光通信的关键技术之一，可以减少激光器的发射功率，增加通信距离。
Pulse Position Modulation (PPM) is one of key technologies for laser communication in Atmosphere, which can reduces the output power of the laser and increases communication distance.
实践证明该滤波器较好地实现了系统识别和噪声消除，能够达到改善井下通信质量、增加井下通信距离的效果。
The practice proved that the filter could realize system identifying and noise removing and achieve the effect of improving quality and increasing distance of underground communication.
仿真实验显示，在网络连接度为8、参考节点数量为20的情况下，平均定位误差小于节点射频通信距离的21%。
Simulations show that average positioning error less than 21% of nodes' radio range in a scenario where an average connectivity is 8 and anchor nodes is 20.
由于大气衰减的影响，非视线散射大气光通信需要使用光学天线以提高对光信号的采集能力，进而增加通信距离。
The primary function of the optical transmit antenna is to collimate far-field divergence of the laser beam and reduce the size of the laser beam in .
因此采用CAN总线通信实现数据的采集和控制，无论从实时性、可靠性还是通信距离上来说，都有它独特的优越性。
Therefore, CAN bus communication with the collection of data and control has is unique advantages in terms of real-time, reliability, or communication form the point of view.
本文通过激光通信链路预算和能见度数据分析，给出了FSO系统的链路可信度及通信距离与气象因素之间的函数关系。
By the analysis of link budgets and visibility-limiting weather conditions, the link availability and link distances as a function of distance can be predicted for any FSO system.
提出并论证了一种根据输入噪声估算战术电台通信距离的方法，并且以VRC—8000电台在城郊通信为例进行了具体的分析计算。
In this paper, proposes and proves a new method of estimating communication range of tactical radio set through analyzing the results of experiments of the VRC-8000 radio station in suburb areas.
在微波视距通信中通常采用二径模型来描述信道，简要介绍了二径模型的频率响应、损伤参数以及多径时延与天线高度、通信距离的关系。
This paper introduces briefly the frequency response, damage parameter of two-ray multipath model and the relationship between multipath time delay, antenna height and communication distance.
在微波视距通信中通常采用二径模型来描述信道，简要介绍了二径模型的频率响应、损伤参数以及多径时延与天线高度、通信距离的关系。
This paper introduces briefly the frequency response, damage parameter of two-ray multipath model and the relationship between multipath time delay, antenna height and communication distance.
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