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SharpEye Solid-State Radar

SharpEye Solid-State Radar



SharpEye Technology - no magnetron
SharpEye is a radical and innovative departure from current marine navigation radar practice in that it is a mono-static pulse radar which uses the doppler effect to determine target velocities. This is achieved by processing received echoes in a bank of narrowband coherently integrating filters which resolve targets within particular velocity bands. SharpEye is able to separate targets from clutter due to their differing radial velocity components. This extra dimension gives a significant performance advantage in detecting small targets in clutter resulting in safer ship operations.

In addition to measuring the amplitude of the received signal, as in conventional radar, SharpEye extracts the relative motion of targets by measuring the phase of received radar echoes relative to the phase of the transmission. Extracting this information requires that the transmitter and receiver elements of the radar must be extremely stable, this precludes the use of a magnetron as the transmitting device.

To achieve this stability SharpEye uses a solid-state power amplifier with a peak output power of just 170W and a duty of 10%. This contrasts with conventional magnetron based marine navigation radar systems which have a 30kW output and duty typically less than 0.05%.

SharpEye transmits relatively long pulses in order to illuminate targets with sufficient energy for detection. To provide the required short range performance, SharpEye transmits a patented sequence of pulses of differing length, with each pulse optimised to cover a specified but overlapping range bracket.

A filter bank processes the echoes received from the pulse sequence to extract the radial velocities of targets and clutter alike. Within the digital signal processor detection thresholds for each of the filters within the bank are calculated adaptively according to sophisticated algorithms, providing optimum control of false alarms while maximising clutter suppression and target detection.

The technology also provides a Built In Test capability (BIT) wherein the system continuously measures key performance parameters such as RF output power, VSWR, oscillator frequencies and receiver sensitivity at frame rate and confirms to the user that the radar is operating within its performance envelope. This system provides an alert within seconds of any degradation in radar performance occurring and removes the need for operator initiated performance checks.

SharpEye technology and innovation provides the commercial marine market with a significant advance in both the performance and reliability of navigation radar leading to increased safety in ship operations.

Specification for the S-Band SharpEye
Part Number LPA - A3
Turning Circle 4.0m
Frequency 2.9 GHz - 3.1 GHz
-3dB Beamwidth Horizontal 1.9 deg
-3dB Beamwidth Vertical 26 deg
Sidelobes Within +/- 10 deg < -30dB
Sidelobes Outside +/-10 deg < -35dB
Polarisation Horizontal
Antenna Gain 28dB
Part Number DTX-A1
Transmitter Coherent - Solid-State
Type Upmast
Rotation Rate 24 or 48rpm
RF Power Peak 200W
RF Av Power 20W
PRF 2300/1180/640 Hz
Pulse Length 0.1 ms to 128 us
Receiver Linear Coherent
Noise Figure < 4 dB
IF Frequency 60MHz
Bandwidth 20MHz
Dynamic Range 120dB
Pulse Compression Standard
Doppler Processing Standard
Frequency Diversity Optional


MantaDigital Radar


MantaDigital is a radical and innovative departure from current marine navigation radar practice in that it is a solid-stage pulse radar which uses the Doppler effect to determine target velocities. Being solid-state means that there is no magnetron requiring routine replacement, this combined with its advanced technology makes it superior performance and lower through-life costs than a conventional magnetron based radar.




MantaDigital Philosophy

Designed for ease of operation MantaDigital ECDIS is the latest product from Kelvin Hughes' Manta development programme. Intuitive operation and a clear display of relevant information provides the operator with a decision making tool which enhances safety and efficiency. Simplicity and ease of operation is at the heart of Kelvin Hughes' design philosophy.

Multi-Function by Design
From the outset, MantaDigital ECDIS has been designed for true multi-functionality, providing a platform for Radar, Chart Radar, ECDIS and Conning Display options. MantaDigital is driven by Kelvin Hughes' "common-core" processor system which is now in use throughout the Radar, ECDIS and VDR product ranges providing enhanced functionality, reliability and low cost of ownership.

Simplicity of Operation
The user interface has been designed to be intuitive to operate and provide all the tools that the navigator needs for efficient and safe navigation without the need to explore multiple levels on each menu.

The Range
MantaDigital ECDIS is available in a variety of mounting configurations to meet the needs of different vessel types and operational scenarios. It can be supplied in options ranging from a single 20" desktop retrofit system through to a fully integrated navigation system. Display options include 20" and 26" high-definition screens for pedestal, desktop and mounting into consoles.

State-of-the-Art Technology
Employing the latest state-of-the-art technology the MantaDigital ECDIS offers a vast array of advantages to the navigator, from immediate situation awareness, through to sophisticated alarm management. The MantaDigital ECDIS uses the same three button and tracker-ball interface concept that has been used successfully in Kelvin Hughes' products for over 10 years.





The wide-screen MantaDigital ECDIS forms the core of ECDISplus. This is available as a desktop, pedestal or console mounted system with screen sizes of 20 or 26. The main user interface is the tracker ball and three buttons which may optionally be mounted remotely. A standard QWERTY keyboard is also provided.

Chart Data
Chart data is the key component of any ECDIS system. To be an official ECDIS this has to be vector based ENC issued by a national Hydrographic authority. ECDISplus can be supplied with any official ENC chart data such as AVCS or PRIMAR. In addition, in ECS mode non-official or raster chart data can be displayed. The choice of suppliers will depend very much on the operating area of the vessel, Kelvin Hughes can make this choice for you to give you the most cost effective and safe coverage.

Licence Management
Managing electronic charts differs significantly from paper charts. Chart cells are loaded onto the ECDIS and activated using licences. Licences from different Hydrographic offices may have differing validity durations, so ensuring that the appropriate charts remain available is an important task. Ships whose trading patterns change will need new cells to be activated. Licences are available for three, six or twelve month durations. Kelvin Hughes can remotely manage the licensing process as part of the Outfit Management Service.

Data Updates
Managing changes to the chart database is key to keeping the chart outfit up-to-date and safe and meeting the Port State Authority requirements. ChartCo provides an update via broadcast, email or Internet technology. This service provides updates for paper and electronic charts and publications and includes additional services such as weather forecasting and routing and a news service. Updates can be passed directly to the ECDIS through the network or via CD. In addition Kelvin Hughes Outfit Management service can manage paper publications and charts alongside your digital data ensuring that at all times you are up-to-date, safe and meet the port state authority requirements.

ECDIS Backup and Flag Approvals
The requirements for ECDIS backup differ significantly across Flag States. As part of ECDISplus Kelvin Hughes will advise on the requirements relating to individual vessels and will provide and manage any get-you-home paper charts that may be required. Whatever the backup requirements Kelvin Hughes will deliver and manage a least cost solution ensuring that at all times the vessels data is up to date.

Installation Service
Whether for a new-build integrated bridge or a retrofit stand-alone, Kelvin Hughes is able to offer a complete installation and commissioning service world-wide.
As part of ECDISplus several standard packages are available, these can cover anything from commissioning only through to a complete install with cable laying, physical mounting of the hardware, commissioning and disposal of any redundant equipment. These installation packages are available at global locations and at fixed pre-agreed prices.

Kelvin Hughes provides a Flag State approved course based on the IMO 1.27 model. This course teaches the navigator to get the most out of their equipment and particularly familiarises the user with using traditional navigational methods on the ECDIS. The overall objective is to enhance navigational safety through safe operation and a thorough understand of the MantaDigital ECDIS.

Key areas addressed by the course are:
Electronic chart data and its display in an ECDIS
Proper use of the ECDIS equipment
ECDIS-related limitations
Operation of the Kelvin Hughes ECDIS
The training lasts five days and is available in the UK (South), Egypt and Singapore.

More about training.

Warranty and Global Service
Through its service locations and a large number of authorised service partners Kelvin Hughes can provide global service and support. Standard and extended warranties are available for all equipment sales.





MantaDigital Integrated Bridge Systems - At the forefront of navigation technology.

Whatever the size of your vessel, MantaDigital, the world-leading integrated bridge system from Kelvin Hughes, can be tailored to your bridge environment.

MantaDigital Multi-functionality
MantaDigital Bridges provides multi-function displays which are able to access information from any processor connected to the system. Each display can show ARPA, ECDIS, CAAS/HAP conning, AIS, VDR real time recording or auxiliary data from engine, fire or cargo control systems. TFT high resolution displays are available in 17 diagonal size (MANTA 1700), 20 diagonal size

MantaDigital provides wide-screen bridge operation with screen sizes of 20" and 26". It is available in pedestal, console and desktop mountings with a range of control options. It can provide the following functionality: Radar, Chart-Radar, ECDIS, Conning Display, Machinery/Engine Monitoring, BNWAS and alarm transfer system, Platform Management, DP and much more Bridge Features

ISO 8468 (Ship's bridge layout and associated equipment - Requirements and guidelines)
MSC 982 (Guidelines on ergonomic criteria for bridge equipment and layout)
MSC 78/11/3 (Safety of Navigation)
Common-core Hardware
Common multifunction hardware - no need for different displays for different functions
Built in redundancy
Full inter-switching of the display functions allows for built in redundancies
Flush mounted, panel mounted or desk to mounted, fully flexibility ergonomic layouts
Expandable from a simple 3 display system to full watch-one bridge
All controls of displays can be operated from the arm of the navigators chair
Operator training
In house or onboard training on individual products or complete systems
Extensive Interface Capability
Experienced team with installation and interface experience
Dedicated support team from design to implementation
Pricing, Design, Interface, Installation, Training
Modular design
Systems to suit the size and shape of any bridge
Design partnerships with yards and owners
Experience with owners and yards worldwide
Total programme management
From conception to handover, fully managed package
Product support
Worldwide 24/7 support for the complete package




The Kelvin Hughes MantaDigital VDR exceeds the requirements of IMO Performance Standard A861(20) for Shipborne Voyage Data Recorders (VDR) and the latest data download specification SN 246

Voyage Data Recorders (VDR) are the black box of the marine industry, they continuously record vital information relating to the operation of the vessel such as speed, engine telegraph, GYRO Heading, radar images, GPS information, communications, bridge conversations, etc. The data is stored in a protected storage device which can be recovered in the event of an incident.

The MantaDigital range of voyage data recorders features:
Simplified or standard functionality.
Removable data storage.
Float-free or fixed data storage capsule.


Compact and lightweight Crash Survivable Module (CSM) and Data Acquisition unit (DAU)
Space saving, modular design makes it ideal for all classes of vessels including high speed ferries.
Removable Storage Unit (White Box) allows the ship's history to be archived ashore (option) allows 30 days continuous recording
Office PC Playback Software for training and monitoring purposes (option)
Replay option provides VCR style viewing of sensor information, including sound and ship's movements on an electronic chart background.
Remote LCD Real Time Display (RTD) - providing conning information
Integral and optional Remote Status and Alarm Module (SAM)
'Black Box' CSM data for the last 12 hours using solid-state memory and an acoustic beacon to aid underwater location (38 hour option is available)
Integral UPS for 2 hours for all data items
USB port for on-board downloads to laptop
AC and 24V DC Operation (Option)
White Box and REPLAY Kit
Remote Status and Alarm Module (SAM)
Remote LCD Real- Time Display (RTD)
Up to 6 additional Microphones
Interface for additional Radars, ECDIS or CCTV
Interface for additional VHF
Serial expansion capability
Bridge wing microphones
Additional Data Interface Units (DIU)
Switch Interface Units (SIU)
Recorded Data
GPS - Date, Time and Position
LOG - Speed
GYRO - Heading
RADAR - Post Display Image
ANEMOMETER - Wind Speed and Direction
BRIDGE AUDIO - Internal and External
VHF COMMS - Communication Channels
RUDDER - Order and Response
AUTOPILOT - Settings and Status
ENGINE/PROPELLER - Order and Response
THRUSTERS - Status, Direction, Thrust




The Simplified Voyage Data Recorder or S-VDR is a system that the International Maritime Organisation (IMO) has mandated for carriage on the majority of large sea going vessels. It is a system similar to the aviation "black box" recorder where if a vessel is involved in an accident or sinks, data can be retrieved to reconstruct the last 12 hours of the vessels voyage. This allows the marine community to clearly understand the reason for the accident, however catastrophic and put in preventative measures to increase future marine safety.

IMO Rules
The new rules stipulate that existing cargo ships on international voyages shall be fitted with an S-VDR as follows:

20,000 gross tonnage and upwards constructed before 1 July 2002, at the first scheduled dry-docking after 1 July 2006 but not later than 1 July 2009
3,000 gross tonnage and upwards but less than 20,000 gross tonnage constructed before 1 July 2002, at the first scheduled dry-docking after 1 July 2007 but not later than 1 July 2010
Administrations may exempt cargo ships from the application of the requirements when such ships will be taken permanently out of service within two years after the implementation date specified above.
Typical S-VDR
The S-VDR collects data from the sensors on board the vessel, it digitises, compresses and stores this information in an externally mounted Crash Survivable Module (CSM) or float-free module. The data storage is a tamper-proof unit designed to be easily recovered in the event of a maritime incident, enabling the data to be replayed for investigative purposes.

S-VDR Data Recording Comparison
Interface VDR S-VDR
Date and Time ü ü
Ship's Position ü ü
Speed ü ü
Heading ü ü
Bridge Audio ü ü
Communications Audio ü ü
Radar Data - post-display selection ü Unless 'impossible'
AIS Ñ If no Radar
Echo Sounder ü Only if the data is available in accordance with the international digital interface standard (IEC 61162)
Main Alarms ü
Rudder Order and Response ü
Engine Order and Response ü
Hull Openings (doors) status ü
Watertight and fire door status ü
Accelerations and Hull Stresses ü
Wind Speed and Direction ü



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