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WorksheetsIntoduction to Radar
Total questions: 12
Worksheet time: 6mins
In continuous wave radar how are the radio frequency (RF) energy radiated?
In very short bursts, followed by long resting periods for reception.
Continuous wave for propagation without resting periods for reception.
Continuous wave for propagation with resting periods for reception.
In very short bursts, with no resting periods for reception.
When a secondary radar is use for identification purposes, the transponder is located in the
aircraft
radar beacon
air traffic control radar
ground surveillance radar
Noise on the Type A display will appear as
grass
snow
blips
flashing spots
The aerial angle of elevation and angular position are transmitted to the display through which of the following unit?
Synchro Unit
Time-Base Generator
T/R Switch
Master Timing Unit
Conical Scanning is used for
locating of targets
tracking of targets
detecting of targets
searching of targets
The FMCW radar altimeter determines altitude by measuring the
Doppler Shift Frequency
Atmospheric Air Pressure
Difference between the transmitter frequency and received echo frequency
Time difference between the transmitted pulse and echo pulse
The type of radar transmitter that produce a signal generated from internal oscillators whose phase is known prior to transmission is known as
Coherent Amplifying Transmitter
Coherent On-Transmit Transmitter
Coherent On-Receive Transmitter
Non Coherent Transmitter
To convey EM energy at frequency of 10GHZ, the appropriate transmission line should be _________ .
Open Wire
Coaxial Cable
Single Core Transmission Cable
Waveguide
Which one of the following is NOT a function of receiver?
Amplification
Noise figure measurement
Filtering
Demodulation
Beamwidth is defined as ____________________________.
The angular width of the sidelobe where the response is 3dB of the peak response
The angular width of the main beam where the response is 3dB of the peak response
The angular width of the main beam where the response is 6dB of the peak response
The angular width of the main beam where the response is 3dB of the lowest response
Which of the following parameters is measured in microwave measurements?
Power
Voltage
Current
Resistance
The deliberate radiation, re-radiation, alteration, absorption or reflection of EM energy in a manner intended to mislead a hostile force in the interpretation is known as ________________.
Noise Jamming
Denial Jamming
Deception Jamming
Reflection Jamming
