062.06 GNSS Flashcards
In the Navigation message, the ephemeris refers to the exact position and orbit of (the observed satellite/all satellites in the constellation/all satellites in the same orbit).
In the Navigation message, the ephemeris refers to the exact position and orbit of (the observed satellite).
The geometric shape of WGS84 is a(n) (sphere/ellipsoid/geoid).
The geometric shape of WGS84 is a(n) (ellipsoid).
GLONASS:
- (10/24/30) satellites
- (3/6) orbital planes
- Orbital height (18 400/19 100/20 200/23 200)
- Orbital period (11 hrs 15 min/≈12 hrs/14 hrs/24 hrs)
GLONASS:
- (24) satellites
- (3) orbital planes
- Orbital height (19 100)
- Orbital period (11 hrs 15 min)
NAVSTAR GPS satellites are placed in a (geo-stationary/nearly circular/elliptical) nominal orbit.
NAVSTAR GPS satellites are placed in a (nearly circular) nominal orbit.
It takes (24 sec/25 sec/12.5 min/12 hrs) to receive the complete Navigation Message from all satellites.
It takes (12.5 min) to receive the complete Navigation Message from all satellites.
The principle of SBAS is to measure (on the ground/in additional satellites) the signal errors transmitted by GNSS satellites and transmit differential corrections and integrity messages for navigation satellites.
The principle of SBAS is to measure (on the ground) the signal errors transmitted by GNSS satellites and transmit differential corrections and integrity messages for navigation satellites.
A GBAS supports all phases of approach, landing, departure and surface operations within an area of coverage of approximately (10/30/60/100) km.
A GBAS supports all phases of approach, landing, departure and surface operations within an area of coverage of approximately (30) km.
NAVSTAR GPS satellites transmit on two UHF frequencies. L2 operates at (1227/1575) MHz and provides (Standard/Precise) Positioning Service for (military/civilian) users. It transmits (only the P code / both C/A and P codes).
NAVSTAR GPS satellites transmit on two UHF frequencies. L2 operates at (1227) MHz and provides (Precise) Positioning Service for (military) users. It transmits (only the P code).
(Multiplex/Multichannel/Sequential) NAVSTAR/GPS receivers are most suitable for use on board an aircraft.
(Multichannel) NAVSTAR/GPS receivers are most suitable for use on board an aircraft.
The space segment of a NAVSTAR/GPS system consists in the notional constellation of (24/30) satellites in (3/5/6/8) orbital planes with (4/5/6/8) satellites in each plane at an approximate height of (19 500/20 200/23 200) km above the WGS 84 ellipsoid. It takes one satellite approximately (12/24/48) hours to orbit the earth.
The space segment of a NAVSTAR/GPS system consists in the notional constellation of (24) satellites in (6) orbital planes with (4) satellites in each plane at an approximate height of (20 200) km above the WGS 84 ellipsoid. It takes one satellite approximately (12) hours to orbit the earth.
When using NAVSTAR GPS on a non-precision approach, the datum used for the MDA is (radar/GPS/barometric) altitude.
When using NAVSTAR GPS on a non-precision approach, the datum used for the MDA is (barometric) altitude.
The navigation message of the Galileo GNSS contains information concerning the satellite orbit (and/and not) the clock references.
The navigation message of the Galileo GNSS contains information concerning the satellite orbit (and) the clock references.
For NAVSTAR GPS, the term inclination denotes the angle between the (orbital plane and the equatorial axis/horizontal plane at the location of the receiver and the orbital plane of a satellite).
For NAVSTAR GPS, the term inclination denotes the angle between the (orbital plane and the equatorial axis).
For the timing section of the Galileo satellite system, 2 clocks have been developed, a (Rubidium/Caesium) Frequency Standard clock and a Passive Hydrogen Maser clock.
For the timing section of the Galileo satellite system, 2 clocks have been developed, a (Rubidium) Frequency Standard clock and a Passive Hydrogen Maser clock.
The abbreviation ‘LAAS’ stands for (…).
The abbreviation ‘LAAS’ stands for (Local Area Augmentation System). It is practically a GBAS.
Generally satellites are considered to be ‘in view’ by the receiver for the SPS if they are more than (7.5/10/15)° above the horizon.
Generally satellites are considered to be ‘in view’ by the receiver for the SPS if they are more than (7.5)° above the horizon.
The abbreviation RAIM stands for (…).
The abbreviation RAIM stands for (Receiver Autonomous Integrity Monitoring).
The navigation message contains clock correction parameters which are used for correction of (receiver/satellite/both receiver and satellite) time.
The navigation message contains clock correction parameters which are used for correction of (satellite) time.
Clock bias is the process of correcting the pseudo range for (receiver/satellite/receiver and satellite) clock errors.
Clock bias is the process of correcting the pseudo range for (receiver) clock errors.
In each Galileo satellite there are two (identical/non-identical) atomic clocks. The clocks are synchronized with (each other/a network of clocks which are located on the ground).
In each Galileo satellite there are two (non-identical) atomic clocks. The clocks are synchronized with (a network of clocks which are located on the ground).
In respect to the use of GNSS, Dilution Of Precision (DOP) is a loss of accuracy due to (…).
In respect to the use of GNSS, Dilution Of Precision (DOP) is a loss of accuracy due to (relative position of the visible satellites).
The abbreviation EGNOS stands for (…).
The abbreviation EGNOS stands for (European Geostationary Navigation Overlay Service).
During an approach to an airfield, GBAS functions as (replacement/correction) of on-board GPS position, allowing (precision/non-precision) approaches.
During an approach to an airfield, GBAS functions as (correction) of on-board GPS position, allowing (precision) approaches.
NAVSTAR GPS satellites transmit on two UHF frequencies. L1 operates at (1227/1575) MHz and provides (Standard/Precise) Positioning Service for (military/civilian) users. It transmits (only the P code / both C/A and P codes).
NAVSTAR GPS satellites transmit on two UHF frequencies. L1 operates at (1575) MHz and provides (Standard) Positioning Service for (civilian) users. It transmits (both C/A and P codes).
The inclination of the Galileo satellite orbits to the plane of the equator is (23/45/55/56)°.
The inclination of the Galileo satellite orbits to the plane of the equator is (56)°.
Satellites transmit (UTC/SV/LT) time. In NAVSTAR GPS satellites a(n) (laser/Quartz/mechanical/atomic) clock is used.
Satellites transmit (SV) time. In NAVSTAR GPS satellites a(n) (atomic) clock is used.
The VDB (VHF Data Broadcast) broadcasts the GBAS signal within its coverage area to avionics in GBAS-equipped aircraft. The VDB signal provided conaints error correction data, integrity data and approach data for (one/more than one) runway.
The VDB (VHF Data Broadcast) broadcasts the GBAS signal within its coverage area to avionics in GBAS-equipped aircraft. The VDB signal provided conaints error correction data, integrity data and approach data for (more than one) runway.
Galileo operates (24/30) satellites in (3/5/6/9) orbital planes with in each plane (…). A Galileo satellite orbits the earth in (8/10/12/14) hours.
Galileo operates (30) satellites in (3) orbital planes with in each plane (9 satellites + 1 spare replacement). A Galileo satellite orbits the earth in (14) hours.
In accordance with ICAO Annex 10, the NAVSTAR/GPS global average 95% position accuracy in SPS should be (5/13/22/30) metres horizontally.
In accordance with ICAO Annex 10, the NAVSTAR/GPS global average 95% position accuracy in SPS should be (13) metres horizontally.
An SBAS consists of (1/2/3/4) elements.
An SBAS consists of (3) elements. (space, ground, user)
The inclination of the NAVSTAR/GPS satellite orbits to the plane of the equator is (23/45/55/56)°.
The inclination of the NAVSTAR/GPS satellite orbits to the plane of the equator is (55)°.
Minimum GBAS plan coverage is (15/25) NM from the landing threshold within (35/45)° apart the final approach path and (10/20)° apart between (15 and 20 / 25 and 30) NM.
Minimum GBAS plan coverage is (15) NM from the landing threshold within (35)° apart the final approach path and (10)° apart between (15 and 20) NM.
Almanac data containes (precise ephemeris/orbital) data of (the concerning GPS satellite/all satellites in the GPS constellation).
Almanac data containes (orbital) data of (all satellites in the GPS constellation).
(1/2/3/4) clocks are installed in each NAVSTAR GPS satellite.
(4) clocks are installed in each NAVSTAR GPS satellite.
The frequency band of Galileo GNSS is:
- (1 064/1 164) - 1 215 MHz
- 1260 - (1 300/1 360) MHz
- 1559 - (1 591/1 691) MHz
The frequency band of Galileo GNSS is:
- (1 164) - 1 215 MHz
- 1260 - (1 300) MHz
- 1559 - (1 591) MHz
