2020-10-07 11:46:12 +01:00
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\pdf_title "Linear Predictive Speech Synthesizer"
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\pdf_author "Andy Pack"
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\pdf_subject "EEEM030 Speech & Audio Processing & Recognition"
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\begin_layout Right Footer
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Andy Pack
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\end_layout
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\begin_layout Left Footer
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October 2020
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\end_layout
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\begin_layout Left Header
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Sustainable Cable Ship - Group 1
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\end_layout
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\begin_layout Section
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Electrical Propulsion
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\end_layout
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\begin_layout Section
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Onboard Operating Systems
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\end_layout
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\begin_layout Section
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Mission Ops - ROV
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\end_layout
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\begin_layout Section
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Network Connections
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\end_layout
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\begin_layout Standard
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In designing a distributed cable repair environment across a depot and ship
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where digitalisation is a key design parameter, a secure and flexible network
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layout is critical.
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\end_layout
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\begin_layout Standard
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The final environment will consist of between 2 and 3 networked sites depending
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on the layout of the depot, some of these sites should have bi-directional
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communications with the others.
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Each site will have a firewall/router at the edge of the network in order
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to enforce security, ports can then be opened to allow specific public
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access to internal services.
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\end_layout
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\begin_layout Subsection
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Depot
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\end_layout
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\begin_layout Standard
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The depot will function as the main site for the wider network requiring
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capabilities for mission planning and administration.
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Besides what could be expected - WiFi, internet connected PCs, the depot
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should also have on-premises server hardware to provide services to the
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entire network.
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\end_layout
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\begin_layout Standard
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These services would include DNS, DHCP, NAS, Active Directory, Exchange
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and print servers to effectively stand up a full corporate network.
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A VPN gateway would also be required to allow access from other sites.
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Security could be further ensured through the use of VLANs to separate
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types of device and prevent unnecessary access to sensitive servers.
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\end_layout
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\begin_layout Subsection
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Leisure Facilities
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\end_layout
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\begin_layout Standard
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The structure of the network designed for the separate leisure facilities
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will depend upon it's location compared to the main depot.
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If the leisure facilities are directly co-located with the main depot then
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one large network could be constructed across both of the buildings.
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This could be done physically or with a wireless connection however a wired
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connection would be preferred for speed and stability.
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\end_layout
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\begin_layout Standard
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Should the leisure facilities be separate from the main depot then it would
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be designed as a separate site with a firewall/router at the edge.
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Some services would be provided locally (DHCP, DNS) while others would
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be retrieved from the main depot over a VPN connection (Exchange, NAS).
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Both of these layouts can be seen conceptualised in figure
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\begin_inset CommandInset ref
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LatexCommand ref
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reference "fig:Network-layouts"
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plural "false"
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noprefix "false"
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.
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wide false
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sideways false
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status open
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\begin_layout Plain Layout
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\noindent
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\align center
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\begin_inset Graphics
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filename ../network/NetworkDiagramJointDepot.png
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lyxscale 20
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width 60col%
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\end_inset
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\begin_layout Plain Layout
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Layout with flat depot network across leisure facilities
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\end_layout
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\end_inset
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\end_layout
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2020-10-21 18:04:50 +01:00
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\begin_layout Plain Layout
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\noindent
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wide false
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sideways false
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status open
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\noindent
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\align center
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\begin_inset Graphics
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filename ../network/NetworkDiagramSplitDepot.png
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lyxscale 20
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width 60col%
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\begin_layout Plain Layout
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\begin_inset Caption Standard
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\begin_layout Plain Layout
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Layout with separate main depot and leisure facilities
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\end_layout
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\end_inset
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\begin_layout Plain Layout
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\begin_inset Caption Standard
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\begin_layout Plain Layout
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Network layouts distributed across the depot, ship and cloud
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\begin_inset CommandInset label
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LatexCommand label
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name "fig:Network-layouts"
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\end_inset
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\end_layout
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\end_inset
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\end_layout
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\begin_layout Plain Layout
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\end_layout
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\end_inset
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\end_layout
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\begin_layout Subsection
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Ship
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\end_layout
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\begin_layout Standard
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The ship will be a contained site with multiple gateways to the wider internet.
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While berthed, the ship should be able to directly connect to the main
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depot, whether physically with an Ethernet cable alongside shore-power
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or via a high-strength wireless connection.
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\end_layout
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\begin_layout Standard
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While at sea, the ship should be connected to the internet via a satellite
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connection.
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Satellite connectivity presents limited speed at a high price however it
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is one of the only methods to ensure consistent connectivity throughout
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the ship's operating range.
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With speeds typically below 1Mbps, specific QoS and flow controls would
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be necessary to prioritise mission critical traffic over user activity.
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\end_layout
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\begin_layout Section
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Digitalisation
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\end_layout
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\begin_layout Standard
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The concept of digitalisation has a somewhat broad definition, sometimes
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dependent on the domain and context in which it is used.
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For the purposes of this project, the following adequately describes the
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goal being pursued,
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\end_layout
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\begin_layout Quote
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The use of digital technologies to change a business model and provide new
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revenue and value-producing opportunities; it is the process of moving
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to a digital business.
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\begin_inset CommandInset citation
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LatexCommand cite
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key "gartner-digitalization"
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literal "false"
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\end_inset
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\end_layout
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\begin_layout Standard
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The most relevant areas within which to explore the process of digitalisation
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are the ship and mission operations, approaching what could colloquially
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be deemed a
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\emph on
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Smart Ship
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\emph default
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.
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\end_layout
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\begin_layout Standard
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As included in the discussion of the network layout, there will be server
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computation capabilities on the ship.
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Through the use of virtualisation, this hardware could be used both for
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network services and additional computation.
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These capabilities could be utilised for fields including AI and machine
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learning.
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\end_layout
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\begin_layout Standard
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Combining bi-directional communication between ship and depot with local
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computation, mission coordination and could be made more efficient.
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Simple implementations could include live mission details being passed
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from depot-to-ship such as fault locations and equipment requirements and
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live,
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\emph on
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heartbeat
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\emph default
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-like data being passed back to the depot such as location, speed, battery
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and fuel levels.
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\end_layout
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\begin_layout Standard
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One of the main limitations would likely be the limited internet speed and
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latency of a satellite connection.
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It will be critical to ensure that, where possible, calculations with results
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relevant to the ship are computed locally in order to reduce the required
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bandwidth of the limited connection.
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2020-10-07 11:46:12 +01:00
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\end_layout
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\begin_layout Standard
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\begin_inset Newpage newpage
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\end_inset
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\end_layout
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\begin_layout Standard
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\begin_inset CommandInset label
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LatexCommand label
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name "sec:bibliography"
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\end_inset
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\begin_inset CommandInset bibtex
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LatexCommand bibtex
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btprint "btPrintCited"
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bibfiles "references"
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options "bibtotoc"
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\end_inset
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\end_layout
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\end_body
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\end_document
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