水声数字通信 电子、电工 许天增,许鹭芬
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￥ 69.55 6.3折 ￥ 110 全新
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北京丰台
认证卖家担保交易快速发货售后保障
作者许天增,许鹭芬
出版社中国海洋出版社
ISBN9787502795580
出版时间2016-12
版次1
装帧平装
开本16
页数324页
字数464千字
定价110元
货号xhwx_1201450049
上书时间2024-12-13
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目录：
chapter 1 introduction
1.1 overview of underwater acoustic munication development
1.2 peculiarities of underwater acoustic munication channels relative to radio munication channels
1.3 explorations establishing an innovative digital underwater acoustic munication signal processing system
1.3.1 digital underwater acoustic munications
1.3.2 main civil digital underwater acoustic munication systems at present
1.3.3 explorations establishing innovative digital underwater acoustic munication system
1.4 munication sonar equation
chapter 2 underwater acoustic munication channels
2.1 theatrical methods of underwater acoustic fields
2.1.1 wave equation and conditions for determining solution
2.1.2 theory of ray acoustics
2.2 sound transmission loss in the sea
2.2.1 sound fields in layered inhomogeneous media
2.2.2 transmission loss due to sound absorption in the seawater
2.2.3 impacts of sound transmission loss on digital underwater acoustic munications and sible countermeasures
2.3 multipath effects in underwater acoustic munication channels
2.3.1 the solutions of the normal mode with respect to sound propagations in two layer media
2.3.2 expression of virtual source images jor sound propagations in layered media
2.3.3 experimental researches on multipath structures in underwater acoustic munication channels
2.3.4 impacts of multipath effects on digital underwater acoustic munications and the sible countermeasures to adapt to the effects
2.4 fluctuation of transmitted sound in underwater acoustic
munication channels
2.4.1 fluctuation of transmitted sound caused by the random inhomogeneity in the body of the seawater
2.4.2 sound scattering form random boundaries and the fluctuation of transmitted sound in underwater acoustic munication channels
2.4.3 impacts of the fluctuation of transmitted sound on digital underwater acoustic munications and the sible countermeasures to adapt to the fluctuation
2.5 noise in the sea
2.5.1 wave equation with sources in fluid medium
2.5.2 ambient noise in the sea
2.5.3 self-noise of shi
2.5.4 impacts of background noise in the sea on digital underwater acoustic munications and the countermeasures to bat against the noise
chapter 3 digital underwater acoustic munication
signal processing
3.1 some signal processing techniques in radio munications that are sible to be extended to underwater acoustic munications
3.1.1 optimum linear filter
3.1.2 adaptive filter and its applications
3.1.3 diversity techniques for fa channels
3.1.4 spread-spectrum technique
3.2 some digital underwater acoustic munication systems
3.2.1 mfsk system
3.2.2 the applications of spread spectrum systems on digital underwater acoustic munications
3.2.3 underwater acoustic munication channels and optimum linear filters
3.3 explorations to for innovative digital underwater acoustic munication signal processing system
3.3.1 several core techniques requiring to be solved in civil underwater acoustic munications
3.3.2 principles establishing an innovative civil digital underwater acoustic munication signal processing system
3.3.3 innovation apnfm digital underwater acoustic munication signal processing system
chapter 4 digital underwater acoustic munication
equipments
4.1 brief introduction to underwater acoustic transducers employed in underwater acoustic munication equipments
4.1.1 some specific requirements for underwater acoustic munication transducers
4.1.2 tubular ceramic piezoelectric transducer
4.2 underwater acoustic telecontrol munications by using digital time correlation accumulation decision signal processing systems
4.2.1 empirical researches on the physical characteristics of shallow water acoustic channels
4.2.2 development of underwater acoustic telecontrol instruction munication employed in the underwater acoustic releaser
4.3 development of advanced fh-ss system digital multimedia underwater acoustic munication equipments
4.3.1 expected target
4.3.2 chiefly key techniques
4.3.3 experimental explorations jor advanced fh system digital underwater acoustic data munication prototype
4.3.4 analyses of feasibility exten the prototype to underwater acoustic multimedia munications
4.4 explorations developing innovative apnfm system digital underwater acoustic munication equipments
4.4.1 outline of the overall structure and operating processes jor the apnfm system
4.4.2 experimental explorations of lnnovative apnfm system digital underwater acoustic munication equipments
appendix
ultrasonic sensing systems in the air medium
内容简介：
由许天增、许鹭芬著的水声数字通信(英文版)以创新的思路，论述了当前备受关注的水声数字通信。在靠前章绪论，第2章阐述水声通信信道中声传播规律。第3章论述水声数字通信信号处理。第4章为水声数字通信设备，论述了著者主持研制的以民用为背景的三种不同体制水声数字通信机。并附有与水声数字通信和探测有关联的超声传感系统的相关内容。可供从事超声传感应用的科研、人员等参。
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