EW300: Final Exam Ques ons and answers Latest RATED
A+ 100% verified correct 2025/2026
Write the steps of the Detect to Engage sequence in order. - CORRECT ANSWERS 1)Detect
*DeLoClassTrackSN*
2)Localize
3)Classify
4)Track
5)Selec*on
6)Neutralize
Pulse Width (PW) - CORRECT ANSWERS the *ac*ve transmit *me* or dura*on of the
electromagne*c pulse
Rest *me (RT) - CORRECT ANSWERS the *non-transmit *me* or interval between
electromagne*c pulses
Pulse Repe**on Time (PRT) - CORRECT ANSWERS the total *me for *one transmission cycle*
Pulse Repe**on Frequency (PRF) - CORRECT ANSWERS number of *pulses transmi3ed per
second*
Peak Power (PPK) - CORRECT ANSWERS the *maximum power* transmi3ed by a RADAR
Duty Cycle (DC) - CORRECT ANSWERS the *ra*o of transmit *me to the total *me*of one
transmission cycle
, Range Resolu*on (RRES) - CORRECT ANSWERS the *minimum range between two targets on
the same bearing* that the RADAR system is able to dis*nguish as two separate targets
Cross Range Resolu*on (RCROSS) - CORRECT ANSWERS the *minimum angular resolu*on*
between two targets of the same range which the RADAR system is able to dis*nguish as two
targets
Which of the following changes would result in a decrease in maximum radar range (Rmax)? -
CORRECT ANSWERS -Reduced *RADAR cross sec*on* of target
-Widening *beamwidth* (azimuth or eleva*on)
How does a Track While Scan (TWS) system respond when a target fails to appear in an
established tracking gate ? - CORRECT ANSWERS *Establish a turn gate* around the last known
posi*on of the target.
Reflec*on - CORRECT ANSWERS When an EM wave strikes a conduc*ve surface and *bounces
off* it at an angle equal to the incident angle.
Diffrac*on - CORRECT ANSWERS The tendency of EM waves to *spread out, or bend *around
objects.
Refrac*on - CORRECT ANSWERS When an EM wave passes into a *medium with a different
SPEED of propaga*on*, and the EM wave bends towards/into the *medium of SLOWER* wave
propaga*on.
Interference - CORRECT ANSWERS The property by which EM waves *superimpose and their
energies* combine when overlapping.
Basic Pulse RADAR - CORRECT ANSWERS Detects bearing and range to target using a *single
antenna*
, Basic Con*unuous Wave RADAR - CORRECT ANSWERS Detects bearing and *rela*ve velocity*
of target using *2 antennas*.
-Receiver
-*Two Antennas*
-*Mixer*
-Transmi3er
Pulse Doppler RADAR - CORRECT ANSWERS Detects *bearing, range, and rela*ve velocity; ALL
3* of a target using a mixer and 1 antenna.
Frequency Modulated Con*nuous Wave RADAR (FMCW) - CORRECT ANSWERS Determines
target bearing, rela*ve velocity, and range with 2 an3enas *and changing frequency* over a
given *me period.
Put the following "gates" in the order used by a track-while-scan radar during a normal tracking
sequence: - CORRECT ANSWERS 1)*Acquisi*on* gate
2)Tracking gate
3)Turn gate -----*R before U*
Beamforming can be achieved by which two means? - CORRECT ANSWERS 1)quasi-op*cal
reflectors
2)antenna array
Electromagne*c wave energy is a3enuated due to - CORRECT ANSWERS 1)Spreading
2)Sca3ering
3)Absorp*on
A+ 100% verified correct 2025/2026
Write the steps of the Detect to Engage sequence in order. - CORRECT ANSWERS 1)Detect
*DeLoClassTrackSN*
2)Localize
3)Classify
4)Track
5)Selec*on
6)Neutralize
Pulse Width (PW) - CORRECT ANSWERS the *ac*ve transmit *me* or dura*on of the
electromagne*c pulse
Rest *me (RT) - CORRECT ANSWERS the *non-transmit *me* or interval between
electromagne*c pulses
Pulse Repe**on Time (PRT) - CORRECT ANSWERS the total *me for *one transmission cycle*
Pulse Repe**on Frequency (PRF) - CORRECT ANSWERS number of *pulses transmi3ed per
second*
Peak Power (PPK) - CORRECT ANSWERS the *maximum power* transmi3ed by a RADAR
Duty Cycle (DC) - CORRECT ANSWERS the *ra*o of transmit *me to the total *me*of one
transmission cycle
, Range Resolu*on (RRES) - CORRECT ANSWERS the *minimum range between two targets on
the same bearing* that the RADAR system is able to dis*nguish as two separate targets
Cross Range Resolu*on (RCROSS) - CORRECT ANSWERS the *minimum angular resolu*on*
between two targets of the same range which the RADAR system is able to dis*nguish as two
targets
Which of the following changes would result in a decrease in maximum radar range (Rmax)? -
CORRECT ANSWERS -Reduced *RADAR cross sec*on* of target
-Widening *beamwidth* (azimuth or eleva*on)
How does a Track While Scan (TWS) system respond when a target fails to appear in an
established tracking gate ? - CORRECT ANSWERS *Establish a turn gate* around the last known
posi*on of the target.
Reflec*on - CORRECT ANSWERS When an EM wave strikes a conduc*ve surface and *bounces
off* it at an angle equal to the incident angle.
Diffrac*on - CORRECT ANSWERS The tendency of EM waves to *spread out, or bend *around
objects.
Refrac*on - CORRECT ANSWERS When an EM wave passes into a *medium with a different
SPEED of propaga*on*, and the EM wave bends towards/into the *medium of SLOWER* wave
propaga*on.
Interference - CORRECT ANSWERS The property by which EM waves *superimpose and their
energies* combine when overlapping.
Basic Pulse RADAR - CORRECT ANSWERS Detects bearing and range to target using a *single
antenna*
, Basic Con*unuous Wave RADAR - CORRECT ANSWERS Detects bearing and *rela*ve velocity*
of target using *2 antennas*.
-Receiver
-*Two Antennas*
-*Mixer*
-Transmi3er
Pulse Doppler RADAR - CORRECT ANSWERS Detects *bearing, range, and rela*ve velocity; ALL
3* of a target using a mixer and 1 antenna.
Frequency Modulated Con*nuous Wave RADAR (FMCW) - CORRECT ANSWERS Determines
target bearing, rela*ve velocity, and range with 2 an3enas *and changing frequency* over a
given *me period.
Put the following "gates" in the order used by a track-while-scan radar during a normal tracking
sequence: - CORRECT ANSWERS 1)*Acquisi*on* gate
2)Tracking gate
3)Turn gate -----*R before U*
Beamforming can be achieved by which two means? - CORRECT ANSWERS 1)quasi-op*cal
reflectors
2)antenna array
Electromagne*c wave energy is a3enuated due to - CORRECT ANSWERS 1)Spreading
2)Sca3ering
3)Absorp*on
