作者: 悅耳 時間: 2025-3-21 20:52
Underwater Communication Channels,e physical properties of the ocean determine the relative advantages or disadvantages of underwater communication systems. To this end, the theoretical study of information propagation through noisy channels produces reliable quantitative measures of the operational performance of communication devi作者: INTER 時間: 2025-3-22 01:08
Underwater Optical Communications: Technology,omings to the use of this underwater communication channel. But perhaps more restrictive, these systems are characterized by a extremely small data bandwidth, about 300 bits per second for VLF and a few bits per minute for ELF.作者: 健壯 時間: 2025-3-22 06:58
Underwater Optical Communications: System Performance,imit our discussion to the use of the APD and BQP sensors described in Chapter 5. For simplicity, in what follows we will ignore atmospheric effects and concentrate our analysis on the underwater channel. That is, our interest is the quality of the transmission on the water column above an underwate作者: 指派 時間: 2025-3-22 09:44
Conclusions, effect on the communication systems that can be deployed by a naval fleet. In particular, we described why underwater vehicles are required to communicate while operating at depths in excess of 60-100 m. In general, the most desirable mechanism for underwater vehicle-to-satellite communications wou作者: 規(guī)章 時間: 2025-3-22 15:24
Book 2013ystem connecting underwater vehicles on a long seaborne mission and a ground station. As a matter of fact, the deployment of efficient communication links with underwater vehicles is one of the greatest technological challenges presently confronted by the world‘s naval forces.To circumvent most of t作者: laparoscopy 時間: 2025-3-22 18:26
1932-1244 nication system connecting underwater vehicles on a long seaborne mission and a ground station. As a matter of fact, the deployment of efficient communication links with underwater vehicles is one of the greatest technological challenges presently confronted by the world‘s naval forces.To circumvent作者: Inferior 時間: 2025-3-22 23:24 作者: 虛度 時間: 2025-3-23 03:42
Underwater Communication Channels,ces. In this chapter we will rely on an information-theoretical analysis to determine the specific advantages and disadvantages of the most widely used underwater communication channels: fiber optics, acoustic, radio-frequency (RF), and optical.作者: BRIDE 時間: 2025-3-23 07:25
Underwater Optical Communications: System Performance,nd concentrate our analysis on the underwater channel. That is, our interest is the quality of the transmission on the water column above an underwater vehicle traveling below the mixed layer. However, a detailed link budget of the system should consider the non-negligible effects created by the atmospheric column and the air-water interface.作者: BARGE 時間: 2025-3-23 10:41 作者: colloquial 時間: 2025-3-23 14:20 作者: sundowning 時間: 2025-3-23 19:51
Underwater Communications978-3-031-01678-3Series ISSN 1932-1244 Series E-ISSN 1932-1708 作者: 縮影 時間: 2025-3-24 00:29
Electrodynamics of Attenuating Media,In this chapter we present a brief overview of classical electrodynamics in attenuating media. The formulas presented here are useful to understand the origin, behavior, and value of the attenuation coefficients that are used for the design, modeling, and simulation of optical and radio frequency (RF) underwater communication systems.作者: multiply 時間: 2025-3-24 05:23
Underwater Optical Communications: Noise Analysis,As previously discussed in Chapter 3, the maximum channel capacity is given by the Shannon- Hartley theorem. It is mathematically expressed as:作者: 我不死扛 時間: 2025-3-24 09:29 作者: 金桌活畫面 時間: 2025-3-24 14:19 作者: Iatrogenic 時間: 2025-3-24 16:52
Underwater Optical Communications: Technology,omings to the use of this underwater communication channel. But perhaps more restrictive, these systems are characterized by a extremely small data bandwidth, about 300 bits per second for VLF and a few bits per minute for ELF.作者: 拖網(wǎng) 時間: 2025-3-24 21:30 作者: Insufficient 時間: 2025-3-24 23:27
Marco Lanzagortaysis of geographic data and of cross-country movement.Provid.This monograph aims to familiarize readers with the problem of evaluating the quality and reliability of digital geographic information in terms of their use. It identifies the key requirements for the functionality of this information and作者: 直覺沒有 時間: 2025-3-25 06:32 作者: Anonymous 時間: 2025-3-25 09:14
Marco Lanzagortavices such as travel and touristic information, phone-directory and messaging, or telephone-banking services. A new taxonomy of quality-of-service is presented which serves as a tool for classifying assessment and evaluation methods, for planning and interpreting evaluation experiments, and for esti作者: tariff 時間: 2025-3-25 12:07
Marco Lanzagortaout as part of the Integrated Environmental Monitoring Programme in the years 1994–2017. A considerable increase in air temperature (0.48?°C/10?years) was found along with variability in precipitation totals (413.0–762.0?mm). Meteorological conditions contributed to substantial variability in water 作者: ALLAY 時間: 2025-3-25 19:05
Marco Lanzagortatives of both manufacturers and users. Inaddition, the theories of warranty and preventive maintenance areintroduced and discussed. Common wisdom supports the notion thatbetter product quality means lower warranty costs for themanufacturer, and lower maintenance costs for the users of amanufactured 作者: anniversary 時間: 2025-3-25 21:54
Marco Lanzagortat. Because the network is becoming intelligent and active, more and more researchers are talking about achieving personalization and customization in Internet content delivery. As researchers are aware, by introducing intelligence into a web intermediary server, they can make the content delivery mo作者: 無目標(biāo) 時間: 2025-3-26 02:36
Marco Lanzagortacated across a local or world wide network forming distributed database management systems. On the other hand, data can be integrated from different autonomous sources. Such sources may be heterogeneous in their data model, their schema, their structure, etc. The goal of an integrated information sy作者: 滔滔不絕地說 時間: 2025-3-26 05:52 作者: SOB 時間: 2025-3-26 11:57
Marco Lanzagortay more attention to the inner landscape of teachers, such as the issue of identity, sense of person, etc. In this book, the readers can learn the insights and multiple perspectives of the best scholars in teacher education.978-981-10-9902-1978-981-10-3549-4Series ISSN 2195-3473 Series E-ISSN 2195-349X 作者: Foam-Cells 時間: 2025-3-26 16:28 作者: Type-1-Diabetes 時間: 2025-3-26 19:15 作者: 健談 時間: 2025-3-26 23:38 作者: 平躺 時間: 2025-3-27 02:44 作者: shrill 時間: 2025-3-27 09:21
Marco Lanzagorta to the integrated system. Thereby, the integrated information system must solve the following problems, among others: - Sources are be technically, syntactically, and structurally heterogeneous. - The integrating system must provide a homogeneous, single user interface to enable users to pose queri作者: alliance 時間: 2025-3-27 09:53
Book 2013n the physics behind the attenuating properties of the oceanic environment and the propagation of electromagnetic signals in the ELF, VLF, and optical bands. We assume the reader is familiar with the basic principles of classical electrodynamics and optics.The system design, components, and noise an作者: cataract 時間: 2025-3-27 14:00 作者: 內(nèi)閣 時間: 2025-3-27 18:17 作者: 制度 時間: 2025-3-28 00:57
10樓作者: 匯總 時間: 2025-3-28 04:12
10樓作者: 文藝 時間: 2025-3-28 06:47
10樓作者: incisive 時間: 2025-3-28 14:15
10樓
