Multiple beam glide slope radio navigation method with two...

Details Multiple beam glide slope radio navigation method with two... Multiple beam glide slope radio navigation method with two...

G - Physics

01

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343/75

G01S 1/18 (2006.01) G01S 1/44 (2006.01) H01Q 25/00 (2006.01)

Patent

CA 1054699

MULTIPLE BEAM GLIDE SLOPE RADIO NAVIGATION METHOD WITH TWO CLASSES OF BEAMS Abstract of the Disclosure: Microwave carrier frequency energy is switched from one beam to another to provide a switched scanning beam for the glide slope function for an instrument landing system. The beams com- prise a plurality of upper beams of uniform angular width in elevation and having a uniform angular center-to-center beam spacing in elevation, together with a class of lower beams con- sisting of at least one beam with each beam of said lower beams having a reduced angular width in elevation and a reduced spacing beneath the center line of the next higher beam which is propor- tional to the reduced beam width, the peak energy radiated at the center line of each beam being substantially inversely propor- tional to the beam width.

244869

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