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2. DESCRIPTION OF RADAR
2-2
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.
Bearing resolution
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
.
Range resolution
Targets
Targets
Horizontal beam width
Horizontal beam width
Separate
target
echoes
Overlapped
target echoes
Separate
target echoes
Overlapped
target echoes
Targets
Targets
Overlapping
Transmission
pulse
Transmission
pulse