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Radar ATO Exam Questions And Correct Answers
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Radar ATO Exam Questions And Correct AnswersRadar timing - ANSWER radiated energy takes 6.18 microseconds to travel one nautical
mile
Carrier frequency - ANSWER the frequency of the energy in the pulse
Pulse Repetition Frequency - ANSWER The number of pulses radiated in one second
Pulse repetition time - ANSWER time between the beginning of one pulse and the start of
the next
Useable echo - ANSWER smallest signal detectable by receiver and processed as target
Ambiguous return ANSWER echoes that appear at incorrect ranges
Azimuth/bearing ANSWER Clockwise angular displacement in the horizontal plane with
respect to true north(true bearing), or the heading of the aircraft (relative bearing)
True Bearing ANSWER the angle between true north and a line pointed directly at the
target
Relative Bearing ANSWER bearing relative to the head of the ship
Range resolution - ANSWER The ability to distinguish between two targets on the same
bearing, but different ranges
Azimuth/bearing resolution - ANSWER The ability to separate targets at the same range
, but on different bearings.
Slant range - ANSWER target range including effect of altitude
Peak power (Ppk) - ANSWER Energy of the pulse
Average Power (Pavg) - ANSWER Energy contained in the pulse measured over the PRT
Duty Cycle - ANSWER Ratio of time the transmitter is on to the cycle time
Pulse Shape - ANSWER Shape and width of the RF pulse influence minimum range,
range accuracy, and maximum range.
Common RADAR System Types: - ANSWER Search, Tracking, Missile Guidance,
Approach, Airborne
Search RADAR - ANSWER Continuously scans space and provides initial target
detection
Tracking RADAR - ANSWER Provides continuous positional data on target
Missile Guidance RADAR - ANSWER Provides information used to guide a missile
Approach RADAR - ANSWER Guide aircraft to safe landing
Airborne RADAR - ANSWER Designed especially to meet strict space and weight
limitations
3 Basic types of Search RADAR - ANSWER Surface-Search, Air-Search, Height-Finding
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