EM Theory

Question 1

What type of radar scan is used for precise target tracking?

Answer 1

Conical (conscan) radar

Question 2

This radar scan uses a thin beam to cover a rectangular area w/ a horizontal sweep

Answer 2

Raster Scan

Question 3

_____ are either passive or active.

Answer 3

Electronic Scan Array (ESA)

Question 4

In a _____ radar, a single high-power transmitter creates the radar signal, and transmits it through the antenna.

Answer 4

Passive ESA

Question 5

In an ____ radar, there are many low power transmit/receive modules that form the radar beam.

Answer 5

Active ESA

Question 6

The ___ radar uses a vertical scan and mechanically nods to pick up the target

Answer 6

Height Finder

Question 7

What are the 3 types of noise jamming?

Answer 7

Barrage
Spot
Swept Spot

Question 8

_____ are wide- band noise transmitters that deny the use of frequencies over wide portions of the EM spectrum.

Answer 8

Barrage

Question 9

The ____ is the AFs primary SEAD asset. It is equipped w/ the _____.

Answer 9

F-16 CJ, AGM-88(HARM) and HTS pod

Question 10

EC-130H Compass Call is an airborne:

Answer 10

Comm jammer used to decrease effectiveness of enemy C3. Secondary EA capability.

Question 11

AGC- Auto again Control counters:

Answer 11

Chaff, clutter, and most types of jamming

Question 12

_____ counters a receding target that’s dispensing chaff.

Answer 12

Lead edge tracking

Question 13

____ occurs when the power in the reflected target signal exceeds the power in the jamming signal.

Answer 13

Burn Through

Question 14

What is a built in radar EP feature that protects as enemy radar gets closer?

Answer 14

Burn Through

Question 15

IR radiation is subdivided into 3 parts:

Answer 15

Near
Midwave
Far

Question 16

What is thermal contrast?

Answer 16

The IR contrast between the background and the target

Question 17

Positive contrast is when:

Answer 17

The target has more IR energy than it’s contrasting background

Question 18

Negative contrast is when:

Answer 18

The target has less IR energy then it’s contrasting background

Question 19

Delta T is:

Answer 19

The temperature difference between a target and it’s background

Question 20

What is thermal crossover?

Answer 20

Periods during the day that are transitional between surface heating and cooling. Normally occurs near sunrise and sunset.

Question 21

What is transmission?

Answer 21

The passing of light through either a transparent or translucent medium.

Question 22

_____ is the bending of a light ray. As light passes from one medium or one density to another, it’s speed is altered.

Answer 22

Refraction

Question 23

_____ is when light passes over the edge of an opaque object and scatters

Answer 23

Diffraction

Question 24

Diffraction can be A helpful aid in imagery analysis because it allows_____.

Answer 24

Us to view inside open hangers, vehicle storage sheds, or other shadowed areas to observe activity

Question 25

What is the first step in accurately assessing the function and production capacity of an industrial complex?

Answer 25

Identify its components using SAR imagery.

Question 26

What is the most apparent feature of industrial facilities?

Answer 26

The concentration of L shaped returns.