雨衰

基于BP网络的卫星通信雨衰预测模型

Rain Attenuation Prediction Model of Satellite Communication Based on BP Neural Network

星载SAR系统设计中的雨衰估算

Estimation of Rain Attenuation in Spaceborne SAR System Design

一种作为抗雨衰对策的自适应CDMA方案

Adaptive CDMA Scheme as Rain Fade Countermeasures

Ka频段卫星通信雨衰分析及解决对策

Analysis and Solution to Rain Attenuation of Ka-band Satellite Communication

中国Ka波段卫星通信线路的雨衰分布特性

Rain attenuation distribution characteristic of Ka band satellite communication

Ka频段卫星通信信道电波传输特性及自适应TDMA抗雨衰对策的应用研究

Ka-band Satellite Communication Channel Characteristics and Application of TDMA Rain Fade Countermeasures

Ku波段卫星通信雨衰预测

Ku band rain attenuation estimation for satellite communications

利用Ku波段卫星通信雨衰探测大气降水的初步研究

Preliminary Study on Detecting Atmospheric Rainfall by Rain Attenuation from Ku-band Satellite Telecommunication System

Ka频段多波束卫星通信系统雨衰特性及补偿方法的研究

The Study on Characteristic of Rain Attenuation and Compensation Method of Ka Band Multi-beam Satellite Communication System

针对链路预算和雨衰动态特性，搭建了两种Ka频段雨衰信道模型。

Two Ka-band rain-attenuation channel models are established for link budget and the dynamic characteristics of rain-attenuation , respectively .

雨衰是导致Ka频段（20/30GHz）卫星链路信号衰落的主要原因。

Rain attenuation is the dominant cause of leading up to the signal degradation in satellite links operation at Ka - band .

雨衰是影响Ku波段卫星通信系统传输质量及系统性能的主要因素之一。

Rain attenuation is a main factor that affects the communication capability and the quality of transmission in Ku-band satellite communication .

因此，本文在总结已有抵抗雨衰效应的各种技术的基础上，提出了基于多输入多输出（MIMO）天线技术的抗雨衰解决方案。

In this thesis , based on reviewing the various existing methods to resist the effect of rain attenuation , a new compensative solution of rain attenuation is proposed using Multiple-Input Multiple-Output ( MIMO ) antenna technology .

在分析Ka波段移动卫星信道的统计特性的基础上，建立了包括多径衰落、阴影遮蔽以及Ka波段所特有的雨衰影响的Ka波段移动卫星信道的综合模型，并进行了系统性能的实验仿真。

The statistical characteristics of the mobile satellite channel at Ka-band are analysed . Weather conditions , as well as multi-path fading and shadowing are taken into account and a comprehensive simulation model is proposed .

介绍了Ku波段卫星通信中雨衰产生的机理及其对信道的影响，并提出了有效减少雨衰对Ku波段卫星通信不利影响的措施。

The principle of rain attenuation is analysed , the effect of Ku - band Channel quality and also proposed anti - rain attenuation solutions to reduce the adverse effect on Ku-band satellite communication .

本文主要研究了雨衰和对流层闪烁产生衰减的机理与特性，提出雨衰采用DAH模型，闪烁采用VandeKamp模型。

The mechanism and characteristic of rain fade and scintillation are studied . The DAH mode is recommended as rain fade prediction model and Van de Kamp mode as scintillation prediction model in Ka-band satellite communications .

通过一个工程实例介绍了提高Ku频段小站抗雨衰能力的方法。对如何充分发挥Ku频段转发器资源和大站高接收性能提出了建议。

This paper introduces a method which enhance the adaptability to rain loss of Ku earth stations by a engineering example , and gives a suggestion to fully utilize transponders EIRP and earth stations with high G / T value .

在该模型中，雨衰信道服从高斯分布，阴影衰落信道服从Nakagami-Rayleigh分布。

In the model , the rain-fading is characterized by gauss distribution , the multi-path fading is characterized by the Nakagami-Rayleigh distribution .

自适应TDMA是一种非常有效的Ka频段卫星通信抗雨衰对策，本文研究了自适应TDMA的解决方案，包括地球站结构、帧结构安排，系统体系结构和链路质量信息的传输等。

And self-adapted TDMA is a very efficient one . The paper works out solutions for self-adapted TDMA , including the arrangement of the earth station structure and the frame structure , and also the transmission of the system structure and the information about link channel quality .

在研究Ku波段卫星通信雨衰问题的基础上，大胆设想反过来从这种大气干扰中提取气象信息，利用Ku波段卫星通信的雨衰来定量测定大气降水。

This paper , on the basis of studying rain attenuation of Ku band microwave for satellite telecommunication systems , bravely envisages in an inverse way , to collect the weather information from this kind of atmospheric interference by making use of rain attenuation to detect rainfall in the atmosphere .

雨衰卫星链路质量的一种优化估计算法

An Optimum Quality Estimation Algorithm for Rain Fade Satellite Communication Links

26GHz波段本地多点分配业务无线系统雨衰特性分析

Characteristic analysis of rain attenuation in 26 GHz LMDS wireless system

在本文中信道模型建立为雨衰和多径阴影衰落信道。

We model the satellite channel as rain-fading and multi-path shadowing fading .

卫星通信链路中的雨衰动态特性分析

The Analysis of Rain Attenuation in Satellite Communication Link

雨衰条件下卫星信道容量的性能分析

An Analysis of Satellite Channel Capacity for Performance under Conditions of Rain Attenuation

其他因素包括：地球自转、电离层、对流层、雨衰等的影响。

Others effect include : Earth rotation 、 ionosphere 、 troposphere 、 rain attenuation , etc.

本文提出一种雨衰信道EbN0的优化估计算法。

In this paper an optimum E b / N 0 estimation algorithm for rain fade channel is proposed .

提出几种补偿雨衰的方法，给出了上行功率控制法的系统原理图。

This paper puts forward several methods of rainfall attenuation compensation and gives the systematic principle figure of go up trip power control .

针对移动卫星系统的特点，分析了降雨引起的信号衰减的原因，给出了雨衰的计算方法。

Aiming at the characteristic of MSS , the reason of signal attenuation by rain is analyzed and the calculation method of rainfall attenuation is given .

同工作于该波段的卫星通信系统一样，雨衰是影响系统性能的主要因素；

Rain specific attenuation has been recognized as a principal cause for impact system performance in LMDS and satellite communications systems operating in the same frequency band .