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