Radar Resolution - Furuno FR-8045 Operator's Manual

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2. DESCRIPTION OF RADAR
2.1.2

Radar resolution

The bearing resolution and range resolution are important in radar resolution.
Bearing resolution
The bearing resolution is the ability of the radar to display the echoes received from
two targets at the same range as the separate echoes. The bearing resolution is pro-
portional to the antenna length and the wavelength.
Range resolution
The range resolution is the ability to display the echoes received from two targets on
the same bearing as separate echoes. The range resolution is calculated by only
pulselength.
The test targets used to calculate the range and bearing resolution are radar reflectors
that have an echoing area of 10 m
2-2
Targets
Horizontal beam width
Targets
Horizontal beam width
Bearing resolution
Targets
Transmission
pulse
Transmission
pulse
Overlapping
Range resolution
Separate
target
echoes
Overlapped
target echoes
2
.
Separate
target echoes
Targets
Overlapped
target echoes

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