8-27C: Interference Issues

Question 1

8-27C2

The primary cause of noise in a RADAR receiver can be attributed to:

A. Electrical causes.
B. Atmospheric changes.
C. Poor grounding.
D. Thermal noise caused by RADAR receiver components.

Answer 1

ANSWER D
Noise in a RADAR receiver can be attributed to thermal noise caused by sensitive RADAR receiver components. Erratic video “blotches” with sharp changes in intensity on the screen may illustrate noise, and the imminent failure of a sensitive receiver component.

Question 2

8-27C5

In a RADAR receiver the most common types of interference are?

A. Weather and sea return.
B. Sea return and thermal.
C. Weather and electrical.
D. Jamming and electrical.

Answer 2

ANSWER A
RADAR operating at peak efficiency aboard a ship will many times display distant tunderstorms, close-in sea return, and flying birds several miles away.