ANN's Daily Aero-Term (05.07.12): Anomalous Propagation | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

** Airborne/NBAA2014 10.22.14 ** HD iPad-Friendly -- Airborne/NBAA2014 10.22.14 **
** Airborne/NBAA2014 10.21.14 ** HD iPad-Friendly -- Airborne/NBAA2014 10.21.14 **
** Airborne/NBAA2014 10.20.14 ** HD iPad-Friendly -- Airborne/NBAA2014 10.20.14 **

Mon, May 07, 2012

ANN's Daily Aero-Term (05.07.12): Anomalous Propagation

Aero-Terms!

Aero-Terms are designed to be a daily reminder of the terms, names, acronyms and explanations of the unique language that populates the aviation world. Aerospace, sport aviation, fixed wing, helo, you name it... it's all fair game.

Aero-Terms should serve as a quick but intriguing reminder of the terms you may use every day, or an introduction to an aspects of the Aero-World you may not yet be familiar with. ANN also encourages readers to go beyond the FMI link, and further research any intriguing terms.

Suggestions for future Aero-Terms are ALWAYS welcome, as are additions or discussion of the explanations given for each Aero-Term.

Anomalous Propagation

Non-standard atmospheric temperature or moisture gradients will cause all or part of the radar beam to propagate along a non-normal path. When non-standard index-of-refraction distributions prevail, "abnormal" or "anomalous" propagation occurs. When abnormal downward bending occurs, it is called "superrefraction." If the beam is refracted downward sufficiently, it will illuminate the ground and return signals to the radar from distances further than is normally associated with ground targets. The term "subrefraction" is applied when there is abnormal upward bending of the radar beam.

FMI: www.weather.gov

Advertisement

More News

Airborne at NBAA-10.22.14: Legacy 500, Universal InSight, BendixKing AeroWave

Also: GE Honda, Sagem's Active SideStick, Syberjet Update, Techno Aerospace Knows How to Party The FAA handed over certification papers for Embraer's Legacy 500 executive jet durin>[...]

ANN's Daily Aero-Linx (10.24.14)

Homebuilt Homepage: Clubs And Newsletters This page lists Homebuilt related Clubs and Newsletters.>[...]

ANN's Daily Aero-Term (10.24.14): Phase Separation – Aviation Fuel

Phase separation is when a combined liquid separates into two different liquids and may occur when autogas is used for aviation fuel.>[...]

Aero-News: Quote Of The Day (10.24.14)

“I’m excited and humbled by the trust that the ALPA Board of Directors has placed in me with this election.” Source: ALPA President-Elect Tim Canoll.>[...]

ANN FAQ: Q&A 101

A Few Questions AND Answers To Help You Get MORE Out of ANN!>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2014 Web Development & Design by Pauli Systems, LC