NAV 5 SAJERBAC TONAP

Selecting a short pulse length will _____ range discrimination, making it possible to distinguish between a tug and its tow for instance

The tuning control of the radar system will amplify the power output.

The target detection performance of the equipment should be impaired when own ship is rolling or pitching up to +/- 10.

This _____ shows trails of target echoes in the form of simulated afterglow.

The minimum acquired radar target capacity for ships more than 10,000 GRT is _____

By increasing the peak power of RADAR, the minimum radar range can be improved.

ARPA converts raw radar echo to an analog signal which can then be stored and used for calculation.

An ARPA system in the hands of unqualified personnel is NOT only dangerous but can indirectly be the main reason for an accident.

RADAR system DO NOT have the capability of calculating the velocity of an object in motion

RADAR systems provide data regarding the type of the target being resolved.

A 10-cm RADAR has a good performance on low altitude targets like buoy.

The duplexer ensure that all circuits connected to the radar system operate in a definite time relationship with each other.

The Fast Time Control reduces weak echoes out to a limited distance from a ship.

The _____ converts the transmitted/ received frequency of the radio wave back to a lower immediate frequency to allow proper amplifications of the returned echoes.

A magnetron is generally installed in the scanner unit.

A long pulse means better resolution in range.

A long pulse means better resolution in range.

_____ adjusts the brightness of range rings.

Wavelength indicates the number of crests, which pass a fixed point per unit time.

The RADAR system provide data regarding the type of the target being resolved.

A 10-cm RADAR is called S-Band with a frequency of 9000 MHz.

The side lobe is the lobe containing the higher power.

The equipment should switch automatically to the unstabilized head-up mode within two minutes after the azimuth stabilization has become ineffective.

An optical horizon is the point of the earth surface which is tangential to the propagated radar wave.

This _____ provides an accurate measurement of range to targets.

ARPA converts digital signal to a raw radar echo which can then be display.

The data collected by RADAR system is enough to tell whether the object was in motion, or it was stationary

A properly adjusted brilliance control is when you’ve seen on the display the trace is as bright as possible

A RADAR system should be capable of displaying two-point targets on the same bearing separated by 20 meters in range, as two distant objects as per performance standards of RADAR

X-band radar has a wavelength of 10 cm.

Most ARPA system are less sensitive in auto-acquisition mode than in manual acquisition mode.

_____ may be provided to shade the display from sunlight but not to the extent that it will impair the observer’s ability to maintain a proper look-out.

Selecting a short pulse length will _____ range discrimination, making it possible to distinguish between a tug and its tow for instance.

RADAR system is prone to external interference by other medium.

The STC is a form of swept gain control which turns _____ the gain in the area of the screen where sea clutter echoes are found.

The radio signals emitted by RADAR system do NOT work beyond the ionosphere.

A RACON emits a characteristics signal when triggered by the ship’s RADAR.

The RADAR should provide the means to enhance the visibility of targets in advance clutter conditions at close range

The X-band RADAR is less affected by rain and fog.

The ARPA should be able to display on request with a relevant symbol at least three equally time-spaced past positions of any targets being tracked

The duplexer protected the receiver from the high pulses of the transmitter.

_____ controls the overall amplification of all returned echoes.

An ARPA should present within _____ of steady state tracking the motion of a target with the following accuracy values (95% probability values).

The heading information should be displayed with a _____ resolution to permit accurate alignment with the ship gyro system.

The bearing accuracy is generally better than the range accuracy of a radar.

The S-Band RADAR is less affected by target swop.

The X-Band RADAR should detect a SOLAS ships more than 5,000 Gross Tons by 12 nautical miles minimum.

A radar sweep is one complete 360-degree rotation of the antenna.

The FTC will _____ the interference on the screen due to the rain and increase the chance of seeing targets within rain showers.

The FTC will _____ the interference on the screen due to the rain and increase the chance of seeing targets within rain showers.

The function of the waveguide is to generate RF pulses.

It should be possible to cancel the display of unwanted ARPA data within _____ seconds

The STC is a form of swept gain control which turns _____ the gain in the area of the screen where sea clutter echoes are found.

RADAR signals cannot be used beyond the stratosphere

The VRM provides an accurate measurement of bearings to target.

The HM is used to temporarily _____ the heading marker.

_____ is the combination of true course and true speed.

Misinterpretation of display symbols may NOT cause severe problems.

_____ is the speed of a target relative to own ship’s position.

When using short pulse, you will get weaker pulse, less radar range but better resolution in range.

The receiver amplifies the incoming echoes.

The radar equipment should be designed to provide the _____ and most consistent detection performance, restricted only by the physical limits of propagation.

Magnetron converts the input into high frequency oscillation.

The radio signals work best when the objects is further away from the receiver and NOT closer

The antenna transfers the transmitter energy to signals in space with the required distribution and efficiency.

The data provided by RADAR system is usually complete.

A bistatic RADAR is a radar system that compares the received signal from a single radar pulse against itself with an aim of comparing the signal.

The cursor position should have a continuous read-out to provide the range and bearing, measured from the consistent reference point.

A minimum of four independent _____, with a means to truncate and switch off individual lines, should be provided.

_____ is a mode of display where own ship and all targets are referenced to the sea, using gyro heading and single axis log water speed input.

There is NO delays in the display of processed ARPA information, particularly on acquisition and re-acquisition or when target maneuvers.

There is NO delays in the display of processed ARPA information, particularly on acquisition and re-acquisition or when target maneuvers.

A short pulse means less resolution in range.

A 3 GHz RADAR can determine and display the range and bearing of radar transponder.

Attenuation causes a decrease in echo strength.

The EBL measures the distance from your ship to the target object.