Radar Interference - JRC JMR-7230-S Instruction Manual

7.4.6

Radar interference

When another radar equipment using the same frequency band is near own ship, a radar interference
pattern may appear on the radar display. This interference pattern consists of a number of spots which
appear in various forms. In many cases, these spots do not always appear at the same places, so that
they can be discriminated from the target echoes.
If radar equipment causing an interference pattern and this equipment are of the same model, their
transmitting repetition frequency is nearly the same. As a result, interference patterns may be
displayed concentrically.
In this case, since the interference patterns cannot be rejected by using only the interference rejection
function, fine-tune the transmitting repetition frequency. (Refer to "18.6 Setting up Radar Antennas")
By applying different transmitting repetition frequencies, the interference rejection effect can be
improved.
Section 7 True and False Echoes on Display 7-12