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Avionics Practice Test: Terrestrial Radio Navigation System
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Terrestrial Radio Navigation System topics include: Radio propagation, noise characteristics, point source and hyperbolic radio systems. Terrestrial radio navigation systems (TRNS) are networks of synchronized transmitters that broadcast signals that can reach the interior of buildings. TRNS are similar to GNSS satellites and can provide navigation services for indoor or urban users.  TRNS work by using a signal sent by a mobile transmitter-receiver-indicator unit, which is then returned to the unit by a fixed transponder. The round trip time is then converted into distances.  Some... Show more
Avionics Practice Test: Terrestrial Radio Navigation System
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25 Questions

1. Which of the following is not a function of the monitoring facility in Omega systems?
2. Which of the following is false with respect to Omega systems?
3. Which of the following advantages does the differential Loran-C provide?
4. Which type of direction finders takes bearings on airborne transmitters and advice the aircraft of its bearing from the ground station?
5. The method in which the user’s receiver and the reference station are assumed not to be synchronized in time is called as _______
6. What is the number of systems used for redundancy in a transmitting station?
7. Which of the following is not true with respect to airborne direction finder?
8. Which of the following type is not used in an Omega system?
9. What does Omega and Decca have in common?
10. Which of the following can be used to reinforce the upward beam in a marker beacon?
11. Which of the following generates the same field pattern as a vertical dipole antenna?
12. The factor by which a receiver fails to reach the theoretical internal noise limit is known as ________
13. Which of the following methods breaks the signal into finite segments to find the ASF?
14. The short term propagation effects caused by local weather changes are called as ______________
15. What is the region in which Omega signals are confined according to VLF wave guide model known as?
16. Which of the following derives all the signals needed by the transmitter from the timer?
17. What type of polarization is used for ground waves?
18. Loran-C is a line of sight navigational system.
19. The area of reduced signal strength in a non directional beacon is called as ______
20. What is used to combine the output of the two fixed loop antenna that are placed at right angles to each other?
21. Ground waves are not adversely affected by which of the following factors?
22. Why can we not use sky waves for navigation?
23. Which of the following is not true with respect to Loran-C?
24. Which of the following is false about Direct ranging in Loran-C?
25. What is the process of ensuring that the receiver works on ground waves?

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