4.4
Initialize Setting
Initialize Setting Initialize Setting
Initialize Setting
4-32
ARPA SENSOR DATA (1/2)
Table 4.4.7
ARPA SENSOR DATA (1/2)
ARPA SENSOR DATA
(1/2)
Description
DRIFT= OFF/xx.xKT Indicates the manually set drift.
CPU COUNTER= xxxxx
When the ARPA CPU is activated, time is incremented up every
second.
CPU STATUS= 00000 Indicates “0000” when the CPU is running.
AUTO= xx Indicates the number of auto acquisition targets.
MAN= xx Indicates the number of manual acquisition targets.
LOST= xx Indicates the number of lost targets.
SCAN= xxxx
Indicates the interval of inputted heading data. Antenna revolution:
Approximately 250 for 24 rpm. 12000 at the maximum when the
antenna is stopped. (60 rpm X 100)
MIN HIT= xx
Indicates the minimum number of echoes to be received successively
before acquisition.
E LEVEL= xxx
Indicates the echo detection level.
Set in “[ARPA PREST] - 4.ECHO LEVEL”.
ARPA SENSOR DATA (2/2)
[ARPA SENSOR DATA (2/2)] displays the ARPA data that is used by manufactural
engineers. When a data number to be displayed is specified in “2. DATA NO”, the data
is displayed. For instance, the data No. 0 is for the data regarding the number of input
echoes.
Note: Overview of ARPA software
Fig. 4.4.13 Overview of ARPA Software
How to process a lost target
When the target echo under tracking is not detected in consecutive nine scannings
(preset can be changed), that target is processed as a lost target and ARPA symbol
changes accordingly. A lost target can be re-acquired if the target echo is detected
before ARPA symbol is cancelled.
Echo
Detection
unit
echo
sorting
Momentum
estimate
unit
Interface
unit
Displayed data
LOG/GYRO/GPS
Radar video signal
ANT rotation signal
Monitor
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