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EN ATPL Radio Navigation Questions in English
Practise Radio Navigation
The aircraft magnetic heading is 040°. Weather radar shows the southern part of Land’s End, at 50°03′N 005°40′W, at relative bearing 030°R and range 80 NM. Assume a magnetic variation of 7°W for this exercise, and neglect slant-range error and meridian convergence. Which offered aircraft position is closest to the calculated fix?
Why is a secondary radar display screen free of storm clutter?
In a simplified local planar model, an airborne weather radar has a nominal vertical beam width of 5°. Which tilt setting places the lower nominal beam edge horizontally, to help assess precipitation at or above aircraft height?
In Airborne Weather Radar (AWR), the main factors which determine whether a cloud will be detected are:
For comparable ground targets in a conventional radar mapping mode, the purpose of a cosecant-squared vertical beam pattern is mainly to:
Why can a narrow pencil beam be preferable to a broad fan-shaped mapping beam for distant ground features?
For a conventional colour weather-radar precipitation display, increasing rain-return intensity is generally shown through which colour sequence, rather than as a direct measurement of turbulence?
Which of the following cloud types is most readily detected by airborne weather radar when using the 'weather beam'?
In a conventional radar mapping mode designed to use a broad vertical fan beam, which statement is correct?
Airborne weather radar systems use a wavelength of approximately 3 cm in order to:
