Isar Sar Flashcards
ISAR optimal height
No real optimal heights, as altitude increases, the doppler from pitch increases and doppler from roll of target decreases, lower altitudes preferred
Optimal grazing angle for ISAR
None really
Best aspect for ISAR image
Oblique bow/stern aspect i.e. 45 degs off target
What do ISAR aperture settings do
Induce or reduce doppler to get better resolution and superstructure details on vessels, remember it is based on sea state high (2x) for low sea state, low (0.25x) for high sea state
Altitude lims for SAR
4000ft to 41,000ft
Best grazing angle for SAR
4-9 degrees
Groundspeed lims for SAR
450kts , anything above 350kts will give flight dynamics exceeded error
RES 5 SAR box
11.2 x 11.2 nm
100 ft res
14.3nm strip
RES 4 SAR box
3.37x3.37 nm
30 ft res
4.28nm strip
RES 3 SAR box
1.12nm by 1.12nm
10feet res
1.43nm strip
RES 2 SAR box
0.34x0.34nm
3ft res
0.34 nm strip
RES 1 SAR box
0.11nmx0.11nm
1ft res
No strip available
ISAR resolutions
Norm 6ft 100ft graduation scale
High 3ft 50ft grad scale
Ultra high classified 20ft graduation scale
Size of ISAR display
1280ft by 1280ft
PPI view for ISAR
Top left - dynamic image
Top right - A scan or second best capture
Bottom left - manual capture window
Bottom right - best frame auto selected
