User's Manual
Table Of Contents
- General Safety Precautions
- List of Contents
- 1 Overview
- 2 Basic Settings; General Remarks about Operating
- 3 PPI Settings
- 3.1 Screen Stabilisation of the PPI: True Motion, Relative Motion
- 3.2 PPI Orientation: Head-Up, North-Up, Course-Up
- 3.3 Centering / Off-Centering of the Display (Center, Off-Center)
- 3.4 Range Selection (Range)
- 3.5 Range Rings, Grid
- 3.6 Own Ship Symbols and Target Symbols, Vectors, Past Position Plots
- 3.7 Trails
- 3.8 Setting the Display of Pre-planned Tracks
- 3.9 Defining the System Track and the Next Waypoint; System Track Display
- 3.10 Setting the Display of User Chart Objects on the RADARPILOT
- 3.11 Setting the Display of Charts and User Chart Objects on the CHARTRADAR
- 3.12 Setting the Display of the Map
- 3.13 Adjusting the Chart or Map to the Radar Video
- 4 Setting the Radar Function
- 4.1 Radar Function On/Off, Interswitch Functions, Master/Slave Switch-Over
- 4.2 Basic Setting of the Radar Video
- 4.3 Selection of the Antenna Revolution Rate
- 4.4 Radar Setting for High Speed of Own Vessel (HSC)
- 4.5 Radar Setting for the Display of RACON Codes
- 4.6 Radar Setting for SART Detection (X-Band only)
- 4.7 Suppression of the Synthetics and Video
- 5 Heading, Speed, Position
- 6 Bearing and Range
- 7 ARPA Functions
- 7.1 Symbols Used
- 7.2 Procedure of the Target Acquisition
- 7.3 Manual Target Acquisition
- 7.4 Automatic Target Acquisition; Settings of the Acquisition/Guard Zone
- 7.5 Deletion of Targets, Loss of Target
- 7.6 Target Data Display
- 7.7 Target Labels
- 7.8 Selecting the Reference Targets for Reference Target Tracking
- 8 EPA Functions (Electronic Plotting Aid)
- 9 Collision Avoidance (TCPA, CPA)
- 10 Trial Manoeuvres
- 11 Editing of Pre-planned Tracks
- 12 Editing the Map
- 13 Displays in the Multidisplay
- 14 Quick Info Box
- 15 Evaluation of the Radar Video
- 16 The Radar Keyboard
- 17 Alarm Management
- 18 List of Alarms
- 19 List of the Alarm Signal Outputs
- 20 Care and Maintenance Work
- 21 Performance Monitor
- 22 System Maintenance Manager
- 22.1 Determining the Versions of Software, Hardware and Documentation
- 22.2 Listing the System Faults
- 22.3 Off-Line Selfcheck
- 22.4 Checking / Correcting the Computer Time
- 22.5 Distribution and Deletion of Map Data; Data Saving
- 22.6 Exchanging Track Files between the Indicators; Data Saving
- 22.7 The Handling of Diskettes
- 22.8 Aborting and Restarting the Program of the Radar System
ED 3038 G 232 / 01 (2002-06)
Operating Instructions
15 Evaluation of the Radar Video
15.4 Sector Blanking
b_r1_e33.fm / 21.06.02
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RADARPILOT / CHARTRADAR
Superrefraction - Subrefraction
If the normal refraction gradient for the radar wave in the maritime boundary layer of the atmosphere is
changed by external influences, subrefraction occurs when the transmitted beam is bent upwards away
from the earth’s surface, and superrefraction occurs when the transmitted beam is bent down towards the
earth’s surface.
In the case of superrefraction, false echoes of targets outside the set range of measurement can occur:
the echo of a transmitted pulse is not received and displayed until the occurrence of the CRT deflection
trace controlled by the next transmitted pulse or by the one after that. The resulting ghost echoes can
occur at any position. Since the position of ghost echoes depends on the pulse repetition frequency,
ghost echoes can be recognised as such by switching over the pulse length on the master radar.
☞ Every pulse length has a particular pulse repetition frequency assigned to it; therefore, when the
pulse length is changed, the repetition frequency changes too.
15.4 Sector Blanking
If the radar function is suppressed in particular sectors (because parts of own ship’s superstructure do
not allow the radar to function in these directions), these sectors are indicated on the PPI near the
compass scale.
Display of Sector Blanking (Example)
Blanking sector