Lernkartei 062 RNAV (Seite 2 von 3)

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Sprache	Deutsch
Kategorie	Technik
Stufe	Universität
Erstellt / Aktualisiert	31.05.2025 / 09.06.2025
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One of the tasks of the GPS control segment is:

to calculate and transmit differential corrections to users which are able to receive Wide Area Differential GPS systems

to control continuously the position and the motion of GPS-satellites

to regulate the transmitted power by the satellites

to determine and send new ephemeris and new satellite clock error data to the GPS-satellites

Basic RNAV (B-RNAV) requires a track-keeping accuracy of:

± 5 NM (95% of flight time)

± 8 NM (95% of flight time)

± 10 NM (95% of flight time)

± 2 NM (95% of flight time)

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

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

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 opposite to the propagation path.

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

What is the difference between the on-board navigation specifications RNP 1 and RNAV 1?

A performance-monitoring and alerting function is required for RNAV 1 only.

An alerting function is required for both RNP 1 and RNAV 1. A performance-monitoring function is only required for RNP 1.

A performance-monitoring function is required for both RNP 1 and RNAV 1. An alerting function is only required for RNP 1.

A performance-monitoring and alerting function is required for RNP 1 only.

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

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

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 RAIM-software in the GPS-receiver.

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

What is a difference between satellites used by EGNOS and those used by GPS?

EGNOS satellites have much shorter orbit times than GPS satellites.

The signals broadcasted by EGNOS are more prone to multipath effects than GPS signals.

EGNOS satellites are geostationary and GPS satellites are not.

The signal format broadcasted by EGNOS differs considerably from GPS signal format.

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

It calculates it by using Almanac data transmitted by the satellites

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

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

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

Which statement is correct regarding the range of an NDB?

In order to double the range of an NDB, the transmission power should be increased with a factor 16.

With propagation over sea the range will be greater than the range with propagation over land.

During the night the range of an NDB will decrease due to the interference of the direct- and earth reflected wave.

The range depends on the altitude of the aircraft.

When a HDG warning flag from a VOR indicator appears, it may indicate:

A missing signal

The failure of the VHF-NAV receiver

Failure of the compass system

All answers are correct

'Beam bends' in the ILS approach path are

slight curves that can be followed by larger aircraft

curves in the normal approach procedure because of 'noise abatement'

curved approaches made with the aid of the instrument landing system

curves in the glide path that are visible on the indicator, but change too fast to be followed by larger aircraft

What does RNP provide on terminal and en-route phases of flight?

Vertical guidance

3D guidance

LNAV/VNAV

Horizontal guidance

Which four parameters define RNAV or RNP performance requirements according to the ICAO PBN concept?

Accuracy, integrity, continuity and redundancy

Accuracy, integrity, continuity and availability

Accuracy, probability, continuity and functionality

Accuracy, integrity and functionality

Which four parameters define RNAV or RNP performance requirements according to the ICAO PBN concept?

Accuracy, integrity, continuity and redundancy

Accuracy, integrity, continuity and availability

Accuracy, probability, continuity and functionality

Accuracy, integrity and functionality

The transmission of the glide slope beacon is characterised by a:

UHF frequency with a minimum range of 10 NM

300 to 3000 Hz Amplitude modulation for the ATIS

UHF carrier frequency with a possible 'voice ident'

VHF frequency modulated with a 90 Hz AM and 150 Hz AM navigation signal

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

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

correction of receiver clock error

Which statement about the C/A-codes transmitted by the GPS-satellites is correct?

The C/A-code is transmitted both on the L1 and the L2 frequency.

The C/A-code is transmitted by the satellites with reference to GMT.

The C/A-code is a PRN-code, repeating every millisecond.

The C/A-code is only used for the Precise Positioning Service (PPS).

Select the correct statement about RNP 1 in relation to the Performance Based Navigation (PBN) concept.

RNP 1 does not exist in the PBN concept.

RNP 1 is an example of navigation application in the PBN concept.

RNP 1 is an example of navigation specification in the PBN concept.

RNP 1 determines the accuracy of the onboard navigation system and is not an example of a component in the PBN concept.

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

the authorized users to work on the L1 and L2 frequency

the receiver to choose the satellites with the best GDOP

What causes coastal refraction?

The difference in speed of the EM-wave over land and over sea

Reflection of the EM-wave at the coastline

A change of the direction of polarization when the surface wave crosses the coastline at an acute angle

The difference in height between NDB-antenna and the aircraft

Which statement is true about the use of the Doppler effect in a Doppler VOR?

The Doppler effect is used to create a signal which is received by the aircraft's VOR-receiver as a frequency modulated signal.

By using the Doppler effect it is also possible to determine the aircraft's approach speed to the VOR.

The Doppler effect is used to create a signal which is received by the aircraft's VOR-receiver as an amplitude modulated signal.

By using the Doppler effect it is possible to determine the range of the aircraft from the VOR station more accurately.

Which of the following is correct regarding false beams on a glide path?

False beams are only present when flying a back-beam ILS approach.

False beams will only be found more than 10 degrees to the left or to the right of the localiser centreline.

False beams will only be found above the correct glide path.

False beams will only be found below the correct glide path.

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

permit more channels in the system

prevent self-triggering of the receiving equipment by the transmitter

prevent overload of the system

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

Skip zone is the distance between the ...

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

begin of the skip distance and the receiver.

limit of the surface wave and the sky wave.

transmitter and the receiver.

Pulse Modulation is ...

used to transport VHF Voice signals

limited to VHF-waves

used in radar by transmitting short pulses followed by larger interruptions

used by the GNSS

How many clocks are installed in each NAVSTAR GPS satellite?

3

4

1

2

The localiser transmitters operate in a frequency band between:

329.15 MHz and 335 MHz.

108 MHz and 111.975 MHz.

108 MHz and 117.975 MHz.

111.975 MHz and 117.975 MHz.

GPS receivers, using both GPS-frequencies L1 and L2, can nearly eliminate:

both, the ionospheric and the atmospheric propagation delay

position dilution of precision

ionospheric propagation delay

atmospheric propagation delay

An aircraft is flying a heading of 245° towards a VOR at FL300. The HSI displays a “selected course” of 255° with a TO-indication. The variation at the VOR is 15°E. Variation at the aircraft position is 16°E and the deviation is +1°. When the pilot keeps the CDI on the left inner dot on a display with two dots on either side

the VOR will be approached along radial 070.

the VOR will be approached along radial 080.

the aircraft will pass south of the VOR.

the aircraft will pass north of the VOR.

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.

monitor the satellite's orbits and status.

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

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

The type of modulation used for the ILS frequency carrier is:

phase modulation.

frequency modulation.

dual modulation.

amplitude modulation.

ILS produces:

a radiation pattern which is 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.

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

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

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.

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

a CDI in the overshoot sector you must disobey the needles.

an HSI the glide path must be set before approach.

Which facility associated with the ILS may be identified by a two-letter identification group?

Inner marker.

Locator.

Glide path.

Outer marker.

Which of the above given circumstances will trigger warning flags for the LLZ and the GP?

2 and 4

1 and 2

1 and 3

3 and 4

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; satellite ephemeris; atmospheric propagation.

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

Satellite clock; satellite ephemeris; atmospheric propagation.

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

Define a cycle:

The fraction of one wavelength expressed in degrees from 000° to 360°.

A complete series of values of a periodical process.

A form of radiomagnetic energy.

The state of the radio waves.

Which statement is correct?

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

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 is opposite to the propagation path.

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

The three different markers can be used in the ILS to determine the distance to the ILS touchdown point of the runway as follows:

The markers are only important in the situation when the Glide Path transmission has ceased.

The outer marker indicates the position where normally the descent has to commence.

The inner marker warns the pilot of the last chance to commence the missed approach procedure.

The middle marker indicates the position for the decision for a missed approach during a CAT I approach due to bad visibility.

The orbital planes of the satellite navigation system NAVSTAR GPS are:

Inclined 55° to the earth axis.

Parallel to the equatorial plane.

Inclined 55° to the equatorial plane.

Inclined 90° to the equatorial plane.

A DME-measurement is initiated by

the transponder in the aircraft

the interrogator in the DME-station

the transponder in the DME-station

the interrogator in the aircraft

062 RNAV

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