Kongsberg K-NAV Navigation products

K-Nav system technology

K-Nav products are tailored to the SOLAS market, meeting all mandatory

requirements from maritime flag states.

Design

Developed by users and human factor specialists,

K-Nav products have been designed to support critical

decision making by professional navigators.

Sensor interface

K-Nav products use a traditional sensor interface

solution based on serial connection from each sensor

to each operator station. A standardized sensor set-

up – with dedicated ports for the respective sensors –

ensures efficient configuration and installation.

Radar signal distribution

K-Nav Radar uses a high-speed network for collecting

radar signals at the transceiver and distributing

them to the display unit: a radar interface (RIN) unit

converts analog radar signals to digital signals at the

antenna location and sends them to the display unit

over the network. Processing of the video, including

target tracking, is performed locally by the display

unit, and filtering is also applied locally to give the

operator full control over the displayed picture.

Optional interswitching capabilities are available to

allow different display units to access radar data from

any antenna over the network. This option provides

fault tolerance with respect to signal processing.

To enhance radar performance and avoid blind

sectors, an additional option permits video from

up to four radars to be displayed simultaneously

in a composite radar picture. In such a composite

picture, targets are automatically tracked across the

boundaries between the sectors from each radar.

K-Nav products

K-Nav Radar

The radar display unit is a type-approved radar /

ARPA on which approved nautical charts can be

displayed as an underlay to the radar video.

Raw data from the antenna is processed in the display

unit, which means that filtering is applied locally

according to the operator’s requirements. The display

unit tracks its own targets and also displays AIS

targets. If radar and AIS targets duplicate each other,

they are ”associated”: the system replaces them with

a single new target (and identifier). This ensures that

the operator cannot mistake a single ship detected by

both radar and AIS for two vessels.

To enhance radar performance and avoid blind

sectors, video from up to four radars can be displayed

simultaneously in a composite radar picture. The

system automatically tracks targets across boundaries

between the sectors covered by each radar.

Radar transceivers

The following radar transceivers are available:

X-band

• 3 cm scanner, antenna and turning unit.

• Antenna sizes: 6 or 8 ft. (1.8 or 2.4 m)

• Transceiver configurations: Upmast.

• Power: 10 kW or 25 kW

S-band

• 10 cm scanner, antenna and turning unit

• Antenna sizes: 12 ft. (3.6 m)

• Transceiver configurations: Upmast

• Power: 30kW

Product Features

K-Nav Radar

• Range scales: 11 (0.125 - 96nm)

• Manual/automatic clutter reduction: Yes

• Stern indicator: Yes

• Electronic Bearing Lines (EBL): 2

• Variable Range Makers (VRM): 2

• Parallel index lines: Yes

• Square picture: Yes - 27% larger radar area

• Chart underlay available: Yes

• Target tracking: Up to 100 targets at once

• Target acquisition: Manual or automatic

• Trails (afterglow): Yes

• Maximum target speed: 100 kn relative

• Target tracking range: 24 nm

• AIS targets and information: Yes

K-Nav ECDIS

• Route planning and validation

• Route monitoring

• Radar video overlay from K-Nav Radar

• ”Active lights” support

• Displays up to 100 ARPA tracked targets

• AIS targets and information: Yes

• EBL / VRM

• Echo-sounder monitoring and recording

• Voyage recording and replay

• Navtex interface

• IMO-defined functions

• Type approved