Basic Electronic Intelligence Theory Flashcards
What are the 7 components of a sine wave?
Wave length Frequency Period Peak amplitude Peak to peak amplitude Phase Cycle
What is polarisation?
The direction of plane of the E field of an EM wave radiated from an antenna. Generally relative to the earths surface.
What are the 4 types of polarisation?
Linear
Elliptical
Rotating
Circular
What are the 3 types of propagation?
Sky wave
Ground wave
Direct wave
What are the 2 types of ducting?
Surface ducting
Elevated ducting
What are the 5 types of fading?
Polarisation Interference Selective Skip Absorption
What are the 4 components of a pulse?
Rise time 10% to 90%
Decay time 90% to 10%
Pulse width 70% to 70%
Pulse amplitude
What are the 8 pulse types?
Rectangular Square Saw tooth Multipulse Cosine squared Exponential Stepped Bandwidth limited
Define PRI?
The interval between pulses from leading edge to leading edge.
Define PRI?
The number of pulses generated by a radar in one second.
Define range resolution?
A radars ability to discriminate between 2 targets.
Define pulse duration?
The actual time a radar is transmitting measured in Us.
Define minimum range?
The minimum range from a radar that a target can be detected.
Define radar kilometre?
The time it takes a transmitted pulse to travel 1 kilometre and back.
Define Doppler shift?
The difference between a transmitted frequency and a received frequency.
Define SSR?
An interrogator sends out a signal that is received by a transponder. The transponder may reply to determine if it’s friendly.
What are the 6 types of inter pulse modulation?
Stagger Dwell and switch Jitter Pulse frequency modulation Sliding Multipulse
What are the advantages of inter pulse modulation?
Eliminates second time round echoes Extends MTI blind speeds Reduces mutual interference Extends MTUR EPM feature
What are the 3 intrapulse modulation types?
Frequency modulation on the pulse
Amplitude modulation on the pulse
Phase modulation on the pulse
What are the 3 advantages of intrapulse modulation?
Improved range resolution
Reduced peak power requirements
Electronic protection measure
What are the 4 categories of scan?
Primary
Secondary
Combined
Passive
What are the 7 primary scan types?
Circular Bi directional Steady/ non scanning Manual/ irregular scan Raster Spiral Helical
What are the 4 types of secondary scan?
Conical
Love switching
Monopulse
Unidirectional
What are the 5 receiver characteristics?
Sensitivity Stability Selectivity Signal to noise ratio Dynamic range
What are the 4 antenna characteristics?
Bandwith
Beam width
Directivity
Gain
What are the 8 components of a superheterodyne receiver?
Antenna Band pass filter RF amplifiers Mixer/ local oscillator I.F band pass filter I.F amplifier Demodulator AF amplifier
What are the 3 types of jamming?
Spot
Barrage
Sweep
What are the 4 main references for EW?
ANP5327
ANP2703
ANP4303
BR67
What are the 3 main elements of a UAS?
At least 2 UAV’s
A ground control station
A communication link
What are the collection priorities?
.
What are the collection requirements?
.
What are the condor bands?
.
What emitters are on a c-130?
APN-241 I band NA
What emitters are on a Hobart class?
SPY-1D E/F MF
SPQ-9B I SS
SPG-62 I/J FC
Radarpilot 1100 I NA
What emitters are on a FFH?
ceafar I E/F MF Ceafar II D MF Sharpeye I NA 9LV453 J FC Cramping I/J TI
What emitters are on a 737 wedge tail ?
MESA C/D EW
What emitters are on a Canberra class?
Giraffe AMB G/H MF
Sharpeye E/F HC
Visionmaster F/I NA
What emitters are on an Ahmad yani?
LW03 D EW
DA05 E/F SS
Rascal Decca 1229 I NA
M45 F/I FC
What emitters are on a Diponegoro?
Bridgemaster-E F/I NA
MW08 G TA
Lirod mk 2 K FC
What emitters are on a Martadinata?
Smart-S mk 2 E/F SS
STIR 1.2 mk 2 I FC
SCOUT 2 I NA
What emitters are on a Fatahilla?
DA05 E/F SS
Decca 1229 I NA
WM28 I MF
SCANTER 4100 I AS
What emitters are on a Kapitan Pattimura?
Strut curve F EW
MUFF COB HH AA
KH5000 F/I NA
TR47C J FC
What emitters are on a Bung Tomo?
Type 1007 I NA
AWS 9 E/F EW/SS
MARCONI1802 I/J FC
