FOREWORD
xi
Signal processing functions
This radar has the signal processing functions listed in the table below.
Program numbers
For further software information, please access the following URL:
http://www.furuno.com/en/business_product/merchant/product/radar/popup.html
Function Description Section
Interference rejector Suppresses interference by other radars.
Interference received simultaneously from multiple
radars may be difficult to reduce.
section 1.21
Echo stretch Enlarges target echoes, especially small echoes.
Suppress interference, sea clutter and rain clutter be-
fore using echo stretch, to prevent enlargement of
unwanted echoes.
section 1.22
Echo averaging 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.
section 1.23
Automatic clutter elimination Discriminates clutter from the radar echo, then reduc-
es the clutter automatically.
section 1.24
Noise rejector 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.
section 1.25
Software Program No. Remarks
SPU 0359344-01.** Processor Unit
KEY 0359348-01.** Control Unit
PM 0359296-01.** Performance Monitor
** denotes minor modifications.
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