水下通信

基于导频的OFDM水下通信信道估计

Pilot based channel estimation for OFDM underwater communication

时间反转法应用于水下通信中BPSK信号解扩处理

Applications of time reversal to dispreading of BPSK signals in underwater communication

激光水下通信TURBO码应用研究

The Application of Turbo-code in Underwater Laser Communication

一方面介绍了三种流量差错控制协议的工作原理，分析了它们的优缺点，结合水下通信网络的特点选择停止等待ARQ协议。

We also analysis the merit and defect of them and choose stop-wait ARQ protocol to meet the UAN .

因此，从上世纪九十年代开始，频谱利用率高的多进制相位调制（MPSK）便成为了高速水下通信的研究热点。

So , MPSK become research hot point of high speed underwater communication , because MPSK has higher frequency validity since 1990 's.

当进行高速水下通信时，由于水下信道的频带有限，扩频和MFSK调制方式无法解决高速率信息传输和可利用信道频带窄的矛盾。

Because of limited frequency band of channel , spread spectrum and MFSK modulations can not resolve that high speed transmission is in contradiction with limited frequency band .

在水下通信的初期，扩频和多进制频率调制（MFSK）是主要的调制方式，很适合几比特每秒和几百比特每秒的低、中速中远距离水下通信。

Spread spectrum and MFSK modulation is primary modulation modes in beginning of underwater communication . They suit underwater communication of middle-long distance with transmission rate of several bps and several hundred bps .

建立一个SLBM试验基地，水下通信和观察设备，陆基导弹跟踪和遥感勘测设备在1980年早期完成。

The construction of an SLBM test site with underwater communication and observation facilities and land-based missile tracking and telemetry facilities was finished in the early1980s .

激光水下通信中纠错码的应用

The Application of Error-Correcting Codes in an Underwater Lasercom PPM System

一种提高高速水下通信性能的基带波形结构设计

A waveform design method for improving high speed underwater communication performance

水下通信和探测系统测量一下水的温度。

Undersea communication and detection system Measure the heat of the water .

激光水下通信中图像数据压缩的模糊控制

Fuzzy Control of Image Data Compression for Underwater Laser Communication

因此它广泛的应用于水下通信和导航中。

It widely used in underwater communications and navigation .

研究结果对于水下通信有重要的应用意义。

The results are significant in underwater communication engineering .

水下通信网转发器软硬件技术研究

A Study on Hardware and Software of the Transponder of Underwater Acoustic Communication Networks

得到了水下通信自组织网的信道利用率等指标。

Get channel availability and so on .

激光水下通信中图像信号处理方法

Image Signal Processing in Underwater Laser Communication

水下通信网数字信号处理模块硬件平台设计与实现

Hardware Design and Implementation of the Digital Signal Processing Module of Underwater Acoustic Communication Network

采用这两种技术使得系统具有纠错能力提高水下通信的质量。

Channel coding technology also used in these two systems to improve the quality of communication .

水下通信和探测系统

Undersea communication and detection system

水下通信的实现，为纯方位目标运动分析提供了新的思路。

The new thought of bearings - only TMA is supplied by the realization of communication underwater .

水下通信领域，声波是目前实现中、远距离无线通信唯一有效的信息载体。

Sound is the only effective information carrier for medium of long distance wireless communication on underwater .

根据激光水下通信的要求，提出一种实时采集图像的方案。

According to the requirements on underwater laser communication , a scheme for real-time image acquisition is proposed .

现代通信系统是陆-海-空三维通信网，三维通信网的组成主要制约于水下通信。

Modern communication system is a land-sea-space three-dimensional communication network whose realization is mainly restrained by underwater communication .

最后，根据水下通信的可行性设计了一个由四个节点组成的水声通信网络，对其数据链路层协议进行仿真研究。

At last we design a UAN making of four nodes and simulate the data link layer protocols .

信号处理模块采用的调制解调技术是水下通信的重要组成部分，对水声通信网络的质量起着至关重要的作用。

Modem technology is an important component of underwater communication , which plays a vital role in underwater acoustic communication network .

真空是理想的无线电通信媒体，但是水下通信却仅限于频率甚低的声波。

A vacuum is an ideal medium for radio communication , but underwater communications are limited to much slower sound waves .

所以选取合适的技术保证在水声信道中进行高速率数据传输更成为水下通信技术的前沿热点研究课题之一。

High-speed data transmission in underwater acoustic channel has become a hot research topic in the forefront of underwater communication technologies .

扩频技术具有良好的抑制干扰能力，同时又被广泛应用于多用户水下通信组网中。

Spread spectrum ( SS ) technology has good ability to confront interference , and has been widely used in underwater networks .

传统的水下通信方式分为有线通信和无线通信两种，水下有线通信可以通过铺设海底线缆来实现。

Traditional underwater communication is divided into wired and wireless communications ; underwater cable communication is achieved through the laying of submarine cables .