RayTech Navigator User’s Guide

Interference Rejection

Mutual radar interference is likely when two or more radar-equipped vessels are operating within range of each other. This usually appears as a series of small dots moving to and from the display center in a straight line or a long, sweeping curve (Figure 5-7). This type of interference is most noticeable at long ranges.

Figure 5-7. Radar Interference Rejection Display

The Pathfinder PLUS Radar includes a mechanism that automatically reduces such interference. This mechanism is normally left switched on. However, if you wish to detect the presence of other radars in the vicinity, you can turn off the interference rejection.

Target Expansion

You can make targets easier to see by expanding them. The scanner type determines the range at which target expansion is available. Target expansion overrides the normal pulse length, thereby increasing the size of the target seen on the screen. However, this is at the expense of range resolution.

5-20

Page 111
Image 111
Raymarine Marine GPS System manual Interference Rejection, Target Expansion