User's Manual
Table Of Contents
- 0 General
- 1 BASIS SETTINGS TO USE THIS RADAR
- 2 OPERATING INSTRUCTION
- 2.1 Radar Operation
- 2.2 Set to Operation
- 2.3 Display Organization and Submenu Structure
- 2.3.1 Sensitivity Controls
- 2.3.1.1 Gain and Clutter Processing
- 2.3.1.2 Tune
- 2.3.1.3 Gain
- 2.3.1.4 Sea
- 2.3.1.5 Rain Rate
- 2.3.1.6 Automatic Clutter Reduction
- 2.3.1.7 Filtering Rain Clouds FTC
- 2.3.1.8 Search and Rescue Transponder SART ON/OFF
- 2.3.1.9 Pulse Width Selection (only available in Master mode)
- 2.3.1.10 Interference Selection IR ON/OFF
- 2.3.1.11 Echo Expansion EXP. ON/OFF
- 2.3.2 Radar Video Displays
- 2.3.3 Radar Video Settings
- 2.3.4 Navigational Elements MAP, PIL, EBL and VRM
- 2.3.5 Cursor Information
- 2.3.6 Cursor in Park Position
- 2.3.7 Information Panel
- 2.3.1 Sensitivity Controls
- 2.4 Select Target Information TGT INFO
- 2.5 Target Menu
- 2.6 Zone Management
- 2.7 Function Menu
- 2.7.1 Select the Backlight Menu Brightness Control and Color Palette
- 2.7.2 Select T-SCE (ON/OFF)
- 2.7.3 Select Route (Option)
- 2.7.4 Select Zoom Menu
- 2.7.5 Select Sector Blanking (ON/OFF)
- 2.7.6 System Clear
- 2.7.7 Performance Monitor (PMU)
- 2.7.8 Magnetron Current
- 2.7.9 Test Alert
- 2.7.10 Senc Menu
- 2.7.11 Chart Info
- 2.8 Chart Radar Function
- 2.9 Select ARPA Trial Manoeuvre
- 2.10 Sea Scout (Option)
- 2.11 Alarm and Warning messages and handling
- 2.12 Working Around the Radar Antenna
- 3 Theory of Operation
- 4 Index
Synapsis Radar
with Nautoscan NX Pedestal
Operator Manual
4265.DOC020102
3-20
Edition July 2015
3.5 Keep the Following Points in Mind when Operating the NAUTOSCAN NX
• Radar Video
The Radar video display area is updated from a memory. The memory is
updated as the antenna scans. The Radar picture is signal processed
from previous scan of the antenna. This process is called scan-to scan
correlation. Three scans are required to integrate a target to full
brightness. It should be noted that while in head up, the scan integration
process is removed and all targets including clutter are displayed at full
brightness.
Anti-clutter filter ON/OFF
In case of heavy clutter developing on the Radar video, the NSC
computer creates a profile of the echo. Within this profile, the received
echoes are monitored for a certain period (Scan-to-scan method).
Irregular echoes are suppressed on the Radar video. Regular echoes
are indicated on the Radar video.
If Anti-clutter filter is ON, the following effect can happen:
Fast acquired targets (> 100KN) can be lost.
Moved acquired targets can be displayed smaller on the PPI.
• Sensitivity Controls
When the sensitivity controls are used, the operator must wait for three
scans to see the final result. The Radar picture will “build” until targets
are displayed at a bright level. Receiver noise and in most cases, clutter,
will not be integrated and will appear dim when the controls are properly
set. Adjust the controls in small increments.
• Radar Detectability
The processing of three scans of Radar data results in greater Radar
detectability. Targets which otherwise would be in noise now stand out
clearly. Greater Radar detectability could occasionally cause reflections
and other undesired echoes to appear as strong returns. Use the
sensitivity controls to achieve a suitable presentation.
• Best Clutter/Interface Rejection
The best clutter/interference rejection will occur when accurate speed
(log) and gyro information is used to stabilize the Radar display. Use the
Sea and Rain controls to suppress clutter and leave targets at a bright
level.