(D)Element 8-38 Miscellaneous

Question 1

The heading flash is a momentary intensification of the sweep line on the PPI presentation. Its function is to:

Answer 1

Inform the operator of the dead-ahead position on the PPI scope.

Question 2

The major advantage of digitally processing a RADAR signal is:

Answer 2

Enhancement of weak target returns.

Question 3

In order to ensure that a practical filter is able to remove undesired components from the output of an analog-to-digital converter, the sampling frequency should be:

Answer 3

Greater than two times the highest component of the sampled frequency.

Question 4

Bearing resolution is:

Answer 4

The ability to distinguish two adjacent targets of equal distance.

Question 5

The output of an RC integrator, when driven by a square wave with a period of much less than one time constant is a:

Answer 5

Triangle wave.

Question 6

38D6 How do you eliminate stationary objects such as trees, buildings, bridges, etc., from the PPI presentation?

Answer 6

Use a discriminator as a second detector.