Deck 1

Question 1

system that uses reflected electromagnetic energy to detect objects

Answer 1

Radar

Question 2

defined by True North, Horizontal and Vertical Plane

Answer 2

Target Position

Question 3

angle between True North and LOS, measured clockwise direction in the horizontal plane

Answer 3

True Bearing

Question 4

angle between the horizontal plane and LOS, measured in vertical plane

Answer 4

Elevation Angle

Question 5

distance from radar to site to the target, measured along LOS

Answer 5

Range

Question 6

time between the beginning of the pulse to the next pulse, reciprocal of PRF

Answer 6

Pulse-Repetition Time (PRT)

Question 7

target echoes that exceed the PRT of a rdr resulting in false range readings

Answer 7

Ambiguous Return

Question 8

total energy contained in a pulse

Answer 8

Peak Power

Question 9

What must be included in transmitter power measurements?

Answer 9

PRT

Question 10

Most instruments are designed to measure what?

Answer 10

Average Power

Question 11

The product of PW and PRF in a radar system is called what?

Answer 11

Duty Cycle

Question 12

Antenna Height and Rotation Speed affect what?

Answer 12

Radar Range

Question 13

Most radar systems cannot detect targets below the what?

Answer 13

The Radar Horizon

Question 14

Bearing referenced to True North is?

Answer 14

True Bearing

Question 15

Radars ability to distinguish between targets that are very close

Answer 15

Target Resolution

Question 16

Ability to distinguish between two or more targets on the same bearing

Answer 16

Range Resolution

Question 17

radar ability to separate targets at the same range but different bearings

Answer 17

Bearing Resolution

Question 18

Calculate Range

Answer 18

dividing elapsed time of pulse by 12.36 microseconds

Question 19

Maximum Range of a pulse radar depends on

Answer 19

Carrier Freq, Peak Power, PRF, and Receiver sensitivity

Question 20

How is Peak Power Obtained

Answer 20

multiply the pulse max power level by pw

Question 21

Speed of Light measured in Statue Miles

Answer 21

186,000 Statue Miles per second

Question 22

Speed of Light measured in Nautical Miles

Answer 22

162,000 Nautical Miles

Question 23

Duty Cycle is the ratio of what?

Answer 23

The transmitter time on to time off