Set of flashcards 062 RNAV PT (Page 1 of 1)

Flashcards	26
Language	Deutsch
Category	Traffic
Level	University
Created / Updated	25.06.2025 / 26.06.2025
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Distances on a Polar Stereographic chart are measured by using:

the latitude scale on a meridian in the vicinity of the line measured

the latitude scale on a meridian in the vicinity of the equator

the longitude scale on a parallel in the vicinity of the line measured

the latitude scale on a meridian in the vicinity of the point of tangency

What is the reason a DME-interrogator makes use of an irregular transmission sequence?

In this way the DME-transponder is able to determine from which aircraft each sequence of pulse pairs is received

In this way the DME-transponder is able to apply the correct delay time to each sequence of pulse pairs received

In this way the DME-interrogator is able to distinguish between his own reply pulse pairs and the reply pulse pairs of other aircraft

In this way the DME-interrogator is able to estimate the size of the error in the range measurement

ILS is subject to false glide paths resulting from…

multiple lobes of radiation patterns in the vertical plane

spurious signals reflected by nearby obstacles

ground returns ahead of the antennas

back-scattering of antennas

Which of the following is true in respect of using ILS backbeam approach procedure?

an HSI you must set the course arrow to the localizer front-beam course

an HSI the glide path must be set before approach

a CDI in the overshoot sector you must disobey the needles

a CDI you must set the OBS to the back-beam localizer course

The TO/FROM indicator of a VOR tells whether …

… you are now flying towards or from the VOR

… the deviation indicator shows that you should manoeuvre the aircraft towards or from the CDI needle

… a track equal to the selected bearing will bring you to or away from the VOR

… you should turn the aircraft towards or away from the CDI indication

Using modern DME equipment meant for general navigation use, the accuracy expected is…

+/- 0.2 NM

+/- 0.5 NM

+/- 0.3 NM

+/- 0.25 NM

The reason for using different frequencies for transmitting and receiving in the DME System is to …

avoid the reception in the aircraft of signals referring to other aircraft

prevent overload of the system

permit more channels in the system

prevent self-triggering of the receiving equipment by the transmitter

How does a receiver of the NAVSTAR/GPS satellite navigation system determine the elevation and azimuth data of a satellite relative to the location of the antenna?

The data is based on the direction to the satellite determined at the location of the antenna

It calculates it by using Almanac data transmitted by the satellites

The data is stored in the receiver together with the Pseudo Random Noise (PRN) code

The data is determined by the satellite and transmitted together with the navigation message

Which statement about the interrogation by the DME-interrogator is correct?

The interrogation does not start before pulse-pairs of the tuned DME-station are received.

The interrogation can only take place if the Echo Protection Circuit has been locked.

The interrogation starts when the interrogator has been warmed up sufficiently, whether pulse-pairs are received or not.

The interrogation starts direct after the correct DME-frequency has been selected on the frequency-selecting panel by the pilot.

Which statement about dilution of precision (DOP) is correct?

The value of the DOP depends upon the availability of RAIM-software in the GPS-receiver.

The value of the DOP depends upon the accuracy with which the range between satellite and receiver can be measured.

The value of the DOP depends upon the availability of Aircraft Based Augmentation Systems.

The value of the DOP depends upon the geometry and the number of satellites in view.

The clock correction parameters in the navigation message are used for:

correction for the ionospheric delay

correction of the satellite time

correction of the receiver time

correction of both, satellite time and receiver time

The navigation message of GPS satellite contains the parameters of the model of the ionosphere. This enables

the use of the satellites with the least tropospheric delay

the authorized users to work on the L1 and L2 frequency

the receiver to choose the satellites with the best GDOP

the receiver to calculate the delay of GPS signals passing through the ionosphere

Almanac data stored in the receiver of the satellite navigation system NAVSTAR/GPS is used for the:

correction of receiver clock error

assignment of received PRN-codes (Pseudo Random Noise) to the appropriate satellite

recognition whether Selective Availability (SA) is operative

fast identification of received signals coming from visible satellites

Regarding NAVSTAR/GPS which of the following statements is correct?

The almanac contains only the orbital data of the specific satellite

All of the above

It takes 7 minutes for a GPS receiver to receive all the data frames in the navigation message

The clock correction parameters are data for correction of the satellite clock

Skip zone is the distance between the …

transmitter and the point on the surface of the Earth where the first sky wave return arrives.

limit of the surface wave and the sky wave.

transmitter and the receiver.

begin of the skip distance and the receiver.

One of the tasks of the space segment of the satellite navigation system NAVSTAR/GPS is to:

compute the user position from the received user messages and to transmit the computed position back to the user segment.

transmit signals which can be used, by suitable receivers, to determine time, position and velocity.

transmit signals to suitable receivers and to monitor the orbital planes autonomously.

monitor the satellite's orbits and status.

There are two modulation types of NDB's: NON/A1A and NON/A2A. Which of the following statements is true?

The bearing indicator is erratic when a NON/A1A station is identifying

In order to identify a NON/A2A station the BFO has to be activated

The transmitted identification modulation frequency of an NON/A1A station is 1020 Hz

The bearing indicator is erratic when a NON/A2A station is identifying

What is the reason that a DME-station can generally respond to a maximum of 100 aircraft?

The automatic ground monitoring station of each DME-station has a limited capacity

The minimum allowable accuracy of the range-measurement cannot be guaranteed when more than about 100 aircraft are using the same DME-station

The number of reply pulse pairs per second that a DME-transponder can transmit is limited to a certain maximum value

The memory of the DME-station is limited

ILS produces:

a 90 Hz lobe and a 150 Hz lobe which are amplitude modulated by the VHF frequency of the ILS.

a radiation pattern which is amplitude modulated by a 90 Hz and a 150 Hz signal.

a radiation pattern which is amplitude modulated by the VHF frequency of the ILS.

two lobes modulated in frequency by a 90 Hz and a 150 Hz signal.

The interrogation pulse sequence on board an aircraft DME system:

Is assigned for aircraft registration

Changes with the slant range

Changes from interrogation to interrogation

Is the same from interrogation to interrogation

Which statement is correct regarding the polarisation of a radio wave?

The polarisation of a radio wave is opposite to the propagation path.

The polarisation of a radio wave corresponds to the orientation of the plane in which the magnetic field oscillates.

The polarisation of a radio wave corresponds to the orientation of the plane in which the electric field oscillates.

The polarisation of a radio wave is always parallel to the earth’s surface.

The reason why the measured distance between NAVSTAR/GPS satellite and a receiver is called a 'Pseudo-Range' is because the:

calculated range is based on an idealised Keplerian orbit

movement of satellite and receiver during the distance calculation is not taken into account

measured distance is based on the Pseudo Random Noise code

calculated range includes receiver clock error

A pseudo range in GNSS is an error to the actual range mainly because of:

Tropospheric delays

Ionospheric delays

Satellite clock error

Receiver clock error

Which of the following lists are all errors that affect the accuracy and reliability of the satellite assisted navigation system (GNSS/GPS)?

Satellite mutual interference; frequency drift; satellite to ground time lag.

Satellite mutual interference; satellite ephemeris; atmospheric propagation.

Satellite to ground time lag; atmospheric propagation; satellite clock.

Satellite clock; satellite ephemeris; atmospheric propagation.

Why is the BFO switched to ON?

To listen to the identification of NON/A2A modulated NDB's

To listen to the identification of NON/A1A modulated NDB's

To allow for direction finding with NON/A2A modulated NDB's

To allow for direction finding with NON/A1A modulated NDB's

In a satellite assisted navigation system (GNSS/GPS) a position line is obtained by:

The aircrafts receiver measuring the time difference between signals received from a minimum number of satellites

Timing the period that is taken for a satellites transmission to reach the aircrafts receiver

The aircrafts receiver measuring the phase angle of the signal received from a satellite in a known position

Timing the period that is taken for a transmission from the aircrafts transmitter/receiver to reach and return from a satellite in a known position

062 RNAV PT

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