Description : What type of radar detects range, bearing, and height?
Last Answer : Three-dimensional.
Description : What type of ranging circuit is most often used with a radar that requires extremely accurate range data?
Last Answer : Range gate or range step.
Description : The degree of bearing resolution for a given radar system depends on what two factors?
Last Answer : Beam width and range.
Description : What radar scope uses a range step for range measurement?
Last Answer : The A scope.
Description : Range-marker generators produce pulses based on what radar constant?
Last Answer : The radar mile (12.36 microseconds).
Description : Why is the range capability of 3D radar usually less than the range of 2D radar?
Last Answer : Higher operating frequency
Description : What limits the maximum range of a surface-search radar?
Last Answer : Radar horizon.
Description : In addition to recovery time, what determines the minimum range of a radar set?
Last Answer : Pulse width
Description : What position data are supplied by 2D search radar?
Last Answer : Range and bearing.
Description : Which preamplifier design (high-impedance or transimpedance) provides improvements in bandwidth and greater dynamic range with some degradation in sensitivity from an increase in noise?
Last Answer : Transimpedance.
Description : Coast Guard Regulations (46 CFR) state that a continuous trickle charge, supplied from the ship's service power system, is required for batteries supplying power to the ___________. A. emergency diesel ... system for the radar C. portable radios for the lifeboats D. radios installed in the lifeboats
Last Answer : Answer: A
Description : State two advantages and two applications of continuous wave radar.
Last Answer : Advantages of CW RADAR. (1) Capable of giving accurate measurement of relative velocity. (2) Low transmitting powers. (3) Compact hence can be used for mobile applications like police radar. (4) ... of the relative velocity of a moving target. (7) Human Gait Recognition (8) In Doppler Radar
Description : State the concept of continuous wave RADAR. Sketch its block diagram. State its any two applications.
Last Answer : Concept- Transmission is continuous here, the circulator is used to provide isolation between the transmitter and the receiver. Since transmission is continuous, it would be pointless to use a ... It is used to measurement of relative velocity to distinguish moving target from stationary objects
Description : State advantages and disadvantages of continuous wave Radar
Last Answer : Advantages continuous wave RADAR : 1.Single frequency transmission and hence narrow receiver bandwidth 2.Duty cycle is unity, so mean power can be as high as transmitters will permits. 3.Ability ... required for receiver and transmitter. 3.Cannot detect targets crossing its beam at right angles.
Description : Carrier is A. One or more conductors that serve as a common connection for a related group of devices B. a continuous frequency capableof being modulated or impressed witha second signal C. ... that provides a data communications service among stations attached tothe network E. None of the above
Last Answer : a continuous frequency capableof being modulated or impressed witha second signa
Description : Contention is A. One or more conductors that serve as a common connection for a related group of devices B. a continuous frequency capableof being modulated or impressed witha second signal C. ... that provides a data communications service among stations attached tothe network E. None of the above
Last Answer : the condition whentwo or more stations attempt to use the same channel at the same time
Description : A precision Approach Procedure is defined as: a. An approach using bearing, elevation and distance information b. An approach with a crew of at least 2 pilots trained for such operations c. An ... by an ILS or a PAR d. An approach using bearing, elevation, and, optionally, distance information
Last Answer : c. An instrument approach procedure utilizing azimuth and glide path information provided by an ILS or a PAR
Description : A precision Approach Procedure is defined as: a. An approach using bearing, elevation and distance information b. An approach with a crew of at least 2 pilots trained for such ... An instrument approach procedure utilizing azimuth and glide path information provided by an ILS or a PAR
Description : What type of receiver is most often used in radar systems?
Last Answer : Superheterodyne.
Description : What type of modulator is most commonly used in modern radar systems?
Last Answer : Line-pulsed.
Description : What type of multivibrator can be used as a radar master oscillator?
Last Answer : Free-running.
Description : Fire-control tracking radar most often radiates what type of beam?
Last Answer : A narrow circular beam.
Description : Radar altimeters use what type of transmission signal?
Last Answer : Frequency modulated (fm).
Description : What type of radar transmitter power is measured over a period of time?
Last Answer : Average power.
Description : Radar is used for (a) Detecting objects by using light waves (b) Reflecting sound waves to detect objects (c) Determining the presence and location of objects with radio waves (d) Tracking rain-bearing clouds
Last Answer : Ans:(b)
Description : What determines the ability of radar to determine the bearing to a target? A. Speed of light B. Speed of target C. Antenna directivity D. Frequency of signal
Last Answer : C. Antenna directivity
Description : Superficially the term object-oriented , means that, we organize software as a (A) collection of continuous objects that incorporates both data structure and behaviour. (B) collection of ... and behaviour. (D) collection of objects that incorporates both discrete data structure and behaviour.
Last Answer : (C) collection of discrete objects that incorporates both data structure and behaviour.
Description : What determines the beam elevation angle of an antenna that is electronically scanned in elevation?
Last Answer : Frequency or phase of radiated energy.
Description : . What is the normal source of dry air for a radar system?
Last Answer : Ship's central dry-air system
Description : The peak power of a radar depends on the interrelationship of what other factors?
Last Answer : Average power, pulse width, and prt.
Description : The ideal radar spectrum has what relationship to the carrier frequency?
Last Answer : Symmetrical above and below the carrier frequency.
Description : The spectrum of a radar transmitter describes what characteristic of the output pulse?
Last Answer : Frequency distribution
Description : Which of the two types of automatic gain control, agc or iagc, is most effective in radar use for the Navy?
Last Answer : IAGC.
Description : What IF frequencies are normally used in radar receivers
Last Answer : Thirty or sixty megahertz.
Description : In an externally synchronized radar, what determines the prr of the transmitter?
Last Answer : The master oscillator.
Description : A self-synchronized radar system obtains timing trigger pulses from what source?
Last Answer : Transmitter.
Description : What is the purpose of the majority of circuits in a radar system?
Last Answer : Timing and control.
Description : What is the purpose of the synchronizer in a radar system?
Last Answer : Controls system operation and timing.
Description : Which of the two general classes of antennas is most often used with radar?
Last Answer : Directional.
Description : What are the required radar inputs for proper indicator operation?
Last Answer : Triggers, video, and antenna information.
Description : What are the three fundamental quantities involved in radar displays?
Last Answer : Range, bearing, and elevation.
Description : Which beam of missile-guidance radar is very wide?
Last Answer : Capture beam.
Description : What width is the pulse radiated by fire-control tracking radar?
Last Answer : Very narrow.
Description : Tracking radar searches a small volume of space during which phase of operation?
Last Answer : Acquisition.
Description : Air-search radar is divided into what two basic categories?
Last Answer : 2D and 3D.
Description : What is the shape of the beam of a surface-search radar?
Last Answer : Wide vertically, narrow horizontally.
Description : A surface-search radar normally scans how many degrees of azimuth?
Last Answer : 360 degrees.
Description : The Doppler variation is directly proportional to what radar contact characteristic?
Last Answer : Velocity.
Description : What radar component permits the use of a single antenna for both transmitting and receiving?
Last Answer : Duplexer.