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 Unlimited -- Recent Daily Episodes

Episode Date

Monday

Tuesday

Wednesday

Thursday

Friday

Airborne On ANN

Airborne 07.20.15

Airborne 07.21.15

Airborne 07.22.15

Airborne 07.23.15

Airborne 07.24.15

Airborne Hi-Def On YouTube

Airborne 07.20.15

Airborne 07.21.15

Airborne 07.22.15

Airborne 07.23.15

Airborne 07.24.15

EAA/ANN AirVenture Innovation Preview

AIP-#1 Vimeo

AIP-#2 Vimeo

AIP-Part 1 YouTube

AIP-Part 2 YouTube

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 OSH15 Day 4 Redux: FAA Says Little, Sun Flyer, 'That's All, Brother'

Also: Jack Pelton Interview - Part 4, Trig Avionics Update, 3rd Class Medical, Part 23 Re-Write, UAVs... FAA Administrator Michael Huerta made his annual speech at AirVenture today>[...]

Debris Found In Indian Ocean Raises Speculation About MH370

Parts Appear To Be Consistent With A B777 Debris that could be from a Boeing 777 has been found off the coast of Reunion Island in the Indian Ocean, raising speculation that it cou>[...]

AD: The Boeing Company Airplanes

AD NUMBER: 2015-15-11 PRODUCT: Certain Boeing Model 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP series airplanes.>[...]

AD: Bombardier, Inc. Airplanes

AD NUMBER: 2015-15-07 PRODUCT: Certain Bombardier, Inc. Model DHC-8-400 series airplanes.>[...]

ANN's Daily Aero-Linx (07.30.15)

Establishing A Flying Club Just back from Oshkosh and jazzed to start your own Flying Club? Here's advice on how to get started from EAA.>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2015 Web Development & Design by Pauli Systems, LC