radar Flashcards
Radar nomenclature
AN/APS-153(v)1
what radar modes can the ship control
srch long srch coastal peri arp (peri long if not 153)
if ship is SAU7k what radar modes can it control
all, but if peri arpdd is avail, it can’t control peri long/short
does radar radiate on deck
no, WOW stops
Does IFF go out on deck
yes not a radiation hazard
Different radar modes
stby srch short srch long srch cstl peri short peri long arpdd ISAR
ARPDD stands for
automatic radar periscope detection and disrcimination
if mission computer power is interrupted, what do you need to do to ensure radar is still hooked up to computer
cycle mission power
which radar modes are unavailable if sticks weren’t in when initialized
isar and arpdd
srch short scan rate, radar range and iff range
108 RPM
100yd-16 nm radar
100 yd - 75 nm iff
peri short scan rate, radar range, iff range
108 rpm
100 yd - 16 nm
100 yd - 75 nm iff
peri long rpm, radar range, iff range
108 rpm
2-32 nm
100 yd - 75 nm
arpdd rpm radar range iff range
154 rpm
100 yd- 30 nm radar
100 yd - 45 nm iff
ISAR radar range
5-160 nm (no iff)
srch long rpm, radar range, iff range
12 rpm
0.25-160 nm radar
100 yd - 160 nm iff
srch cstl rpm, radar range, iff range
12 rpm
0.25 - 160 nm radar
100 yd - 160 nm iff
range arpdd will not give discriminator labels
100 yd - 2 nm
peri integration time in relation to sea state
the higher the sea state, the higher the integration time (PINT)
sig or ESIG for periscope detection
sig
SIG or ESIG for general features
ESIG
when do we get the A in the lower right corner of a symbol on ARPDD
once the signature has been viewed
similarity in small target indicator for Peri and ARPDD small contact
both have S in upper right
way to improve ISAR image in low sea states or low target speed
increase integration
iff interrogator mode limitations within 100 nm of US, HAWAII or ALASKA
interrogate only IAW current national/local frequency assignments
1000’ AGL and below
only in slow scan modes
no more than 5 interrogators in one area
mode 3 3/c sweeps limited to 10 at a time
no Mil Mode
IFF interrgoator limits more than 100 nm from us
only in slow modes
iff interrogations above 7000’ DA
no with an inhbt intg or rdr/intg fail
max number of radar/iff tracks
320
tracks in the 153
actually tracks 2500 but only shows 320, 256 radar 64 iff
what percentage should you keep radar tracks below
90%
max number of windows and sectors
4 each
do windows and sectors inhibit prob pd
no
windows override sectors or sectors override windows
windows override sectors
tracker sectors vs radiate sectors
tracker is only to prevent tracks from being made
radiate says do or do not radiate here (no prob pd)
will we get prob pd in a land mass repair inhibit box
no
does LSF declutter tracks above or below selected speed
below
should we adjust gain
probably not
