Radar antennas

Question 1

Parabolic antenna

Answer 1

Illuminated by a source
Reflects beam outward in uniform phase
size shape dictate beam shape

Question 2

Cassegrain antenna

Answer 2

Uses a two reflector system

Well-suited for monopulse track

Question 3

Planar array antenna

Answer 3

Flat metal plate with arrays dipole antenna
Scanned physical
Scanned electric

Question 4

Phased array antenna

Answer 4

Electrically steered 
Random movements
Programmed patterns
Arrayed transmitting
Coupled phase shifters
Shifting phase steers beam
Computer rapidly and independently controls groups of individually radiating elements

Question 5

What is Radar jamming

Answer 5

Intentionally radiating, reradiating and/or reflecting EM energy to our radars receiver to saturated with false targets false data confusion delay and deny

Question 6

Jam fundamentals

Answer 6

Frequency matching
Continuous interference
Signal-to-noise ratio
Jamming to signal ratio
Burn through range

Question 7

Radar jamming types

Answer 7

Active passive

Active: noise/deception

Question 8

Unmodulated radar

Answer 8

Barrage spot swept

Question 9

Modulated

Answer 9

Conical

Question 10

Deception

Answer 10

False targets low power requirements process incoming signals

Question 11

Displacement

Answer 11

Angle deception
targets amplitude of signal

Range deception range gates

Velocity deception lost the plot gate