062 RadNAV
Radio Nav
Radio Nav
Fichier Détails
| Cartes-fiches | 50 |
|---|---|
| Langue | English |
| Catégorie | Code de la route |
| Niveau | Autres |
| Crée / Actualisé | 16.08.2022 / 18.08.2024 |
| Lien de web |
https://card2brain.ch/box/20220816_062_rnav
|
| Intégrer |
<iframe src="https://card2brain.ch/box/20220816_062_rnav/embed" width="780" height="150" scrolling="no" frameborder="0"></iframe>
|
Créer ou copier des fichiers d'apprentissage
Avec un upgrade tu peux créer ou copier des fichiers d'apprentissage sans limite et utiliser de nombreuses fonctions supplémentaires.
Connecte-toi pour voir toutes les cartes.
Which errors can occur with VORs?
- Mountain effect: Interference due to reflection
- Bending: Gradual changes, flying a constant wrong bearing
- Scalloping: Sudden changes, fluctuation on indication
On a VOR Instrument, what does OBS stand for?
Omni Bearing Selector -> seleced course
What is the frequency range of Surveillance Radars?
UHF: 300 - 3000 MHz
Name the 4 global GNSS providers
- NAVSTAR GPS
- GLONASS
- GALILEO
- Beidou
How is the GLONASS system characterised (#-satellites, orbit height, inclination)
- 24 satellites
- 19'130km
- 64.8° (to the equator)
How is the Galileo system characterised (#-satellites, inclination, orbit duration)
- 30 satellites
- 23'260km
- 56° (to the equator)
How is the Beidou system characterised (#-satellites, inclination, orbit duration)
- 30 satellites
- geostationary (~35'000km)
How is the NAVSTAR GPS system characterised (#-satellites, inclination, orbit duration)
- 31 satellites
- 20'180km
- 55° (to the equator)
- 1'575.42 MHz
How many satellites are required (minimum) for a 3D position?
4
--> To compensate for the receiver clock error
Explain the working principle
Satellites transmit pulse modulated signals which are received by a station on the earth. The run time of the signal is used to determine the distance between receiver and satellite. With the signal of multiple satellites (min. 4) the position can be determined precisely (+/- 4m).
Name the 3 segments of GNSS
- User segment = Devices receiving GPS signals
- Satellite segment = Satellites
- Control segment = Control stations ensuring that satellites transmit accurate information.
Name the two types of waypoints
Fly-over-waypoint
Fly-by-waypoint
Difference between Fixed radius transition and radius to fix?
In FRT the turn is initiated before the WPT to the new heading from the WPT
In RF the turn is made from WPT to the other
What precision is required for B-RNAV?
+/- 5 NM from the desired path for 95% of the flighttime
--> Also referred to as RNAV 5
What precision is required for P-RNAV?
+/- 1NM from desired path for 95% of the flight time
--> Also referred to as RNAV 1
What does NDB stand for?
Non-Directional radio Beacon
What does ADF stand for?
Automatic Direction Finding
Which type of propagation (ground/sky/space waves) do NDB use and in which freq. bands do they operate?
Ground waves in LF and MF
What is the difference between QDM and QDR?
QDM: Magnetic bearing to the station, QDR: Magnetic bearing from the station -> QDM = QDR + 180 Deg.
How are NDBs depicted on charts?
Single dot in circle surrounded by multiple circles made up of dots.
In which exact bandwith do NDBs operate?
200 - 1750 kHz
What is the range of NDBs and what does it depend on?
10 - 200 NM, depending on station output energy.
What is the difference between N0N A1A and N0N A2A emissions?
NON A1A emissions: Interrupted bearing by identification 2x/min.
NON A2A emissions: Steady bearing and identification 8x/min.
Which limitations do occur with both VORs and NDBs?
Cone of silence aka conce of confusion.
Explain the working principle of an NDB (singal reception with a loop antenna)?
A loop antenna rotates and receives max. reception when the plane of the loop antenna is parallel to the direction of the NDB radio wave. If the plane of loop is perpendicular to direction of wave travel (simplified: The NDB radio wave travels through the loop antenna), the antenna reception is minimum.
Why do ADFs also need a sense antenna (apart from the loop antenna)?
Do identify in which direction of the loop antenna pattern the NDB is situated (with only loop antenna, 2 potential directions are possible, which are 180 deg. apart.)
Why does ADF also require a sense antenna?
Do identify in which direction of the loop antenna pattern the NDB is situated (with only loop antenna, 2 potential directions are possible, which are 180 deg. apart.)
What is the accuracy of an ADF?
+/- 5 deg.
What does the "ADF Button" on an ADF do?
In "ADF Mode", the pointer is activated and the ADF treis to point to the station.
In "ANT Mode", loop antenna is disabled and all receiving is done through the sense antenna -> clearest audio reception.
What does the "BFO Button" do on an ADF?
This oscillator creates an audio freq. signal from Morse code radiotelegraphy transmissions to make them audible.
-
- 1 / 50
-
