Log in
  
Home > GPS World Author
GPS World Author

David W. Affens

David W. Affens is the manager of the NASA Search and Rescue (SAR) Mission Office at the Goddard Space Flight Center (GSFC) in Greenbelt, Maryland, where he began working in 1990. He holds a degree in electronic engineering. Before joining NASA, he worked in various aspects of submarine warfare and intelligence gathering for the U.S. Navy over a span of 21 years.

Article
Innovation: The Distress Alerting Satellite System   January 1, 2011
By: David W. Affens,George Theodorakos,James E. Mentall,Roy Dreibelbis

In 1997, a Canadian government study determined that an improved search and rescue system would be one based on medium-Earth orbit satellites, which can provide full global coverage, can determine beacon location, and would need fewer ground stations. This month’s column examines the architecture...more >>







CONNECT
  RSS
Become a Fan
Join our Network
Follow Us


CAREER LOCATOR
GPS World Career Locator

Search for the job
of your choice:

Keywords:

 


INDUSTRY-SPONSORED WHITE PAPERS

Check out our white papers! Current white papers and their sponsors include:

Averna:
GPS Record and Playback System
Cast Navigation:
Guided Munitions Testing
F-16/CAST 3000
CoreLogic:
Identifying The Right Tax Jurisdiction: Data Makes The Difference
Hemisphere GPS:
Crescent Vector Board
Peterson Mobility Solutions:
Location Based Advertising Report
Position One Consulting:
The Global Market for GPS/GNSS in GIS Mapping 2009-2013
Precision Market Report 2008-2012
Symmetricom:
Local Time Scale Independent of GPS
Commercial Time-Scale System


NEWSLETTERS

Subscribe Today!

From GPS World
Navigate!Weekly News
Professional OEM
Consumer OEM
Defense PNT
Wireless Pulse
LBS Insider
Survey Scene
GNSS Design & Test

From Geospatial Solutions
GSS Weekly
GeoIntelligence Insider