Furuno FAR-1513 Operator's Manual page 13

Signal processing functions
This radar has the signal processing functions listed in the table below.
Function
Interference rejector
Echo stretch
Echo averaging
Automatic clutter elimination
Noise rejector
Program numbers
Software
SPU
KEY
PM
** denotes minor modifications.
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Suppresses interference by other radars.
Interference received simultaneously from multiple
radars may be difficult to reduce.
Enlarges target echoes, especially small echoes.
Suppress interference, sea clutter and rain clutter be-
fore using echo stretch, to prevent enlargement of
unwanted echoes.
The radar samples echoes with each scan.
Targets that show a large change with each scan are
judged as clutter and are reduced to display only
echoes from legitimate targets.
Discriminates clutter from the radar echo, then reduc-
es the clutter automatically.
Reduces white noise then improves the on-screen
S/N ratio by processing the weighted moving aver-
age filter for the received echoes in the range direc-
tion. Use this function with caution. Weak target
echoes may disappear from the screen or the range
resolution may worsen.
Program No.
0359344-01.** Processor Unit
0359348-01.** Control Unit
0359296-01.** Performance Monitor
Description
Remarks
FOREWORD
Section
section 1.21
section 1.22
section 1.23
section 1.24
section 1.25
xi