radar reflectors??

They're for aircraft performing embedded (self-contained) approaches utilizing their onboard radar. The reflectors are normally placed to define the landing threshold. Military fighter aircraft and some transport aircraft utilize these systems. The positives of these embedded approaches, commonly known as AILA (Airborne Instrument Landing Aid) is that there's no ground or airfield power required to run any ground systems (they're purely passive), and there's no signal(s) such as you'd have with ILS or VORTAC that can be jammed or destroyed in a hostile environment.
 
Interesting...
What kind of indication you get?
Is it distance, visual (radar display), azimuth, course deflection?
 
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What are rwy radar reflectors for?

[/ QUOTE ] They're used by the FAA to randomly lower the applicants ATP written test score by 1.25%.
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One of the test question shows the symbol (looks like to cones connected at the pointy ends) on an airport diagram, and asks, "What is this symbol".
 
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Interesting...
What kind of indication you get?
Is it distance, visual (radar display), azimuth, course deflection?

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You get a display of the the runway, as outlined by the reflectors, in a radar-mapping style display. Also from the reflectors, you get distance as well as a computed glidepath display, in many applications.
 
...Can someone tell me what an azimuth is? I looked it up in my little book of explanations, and it gives me this explanation:
azimuth - Angular measurement made in a horizontal plane and in a clockwise direction.
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Kinda confusing...little help please?
 
As pertains to ILS-type approaches, for easy understanding:

Azimuth: degrees left/right of localizer centerline.

Elevation: degrees above/below glideslope.
 
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