Latest Radar Stories
WALTHAM, Mass., Jan.
WALTHAM, Mass., Jan. 20, 2015 /PRNewswire/ -- Raytheon Company (NYSE: RTN) will issue its 2014 fourth quarter and full-year earnings news release at 7 a.m. EST Thursday, Jan. 29, 2015.
DALLAS, January 18, 2015 /PRNewswire/ -- ReportsnReports.com adds "Air Traffic Control (ATC) Equipment Market by Product Type, by Geography and Country - Forecast Analysis
WALTHAM, Mass., Jan. 16, 2015 /PRNewswire/ -- Raytheon Company (NYSE: RTN) Chairman and CEO Thomas A. Kennedy announced today the appointment of Frank R.
Move broadens fleet protection, keeps sailors safe TUCSON, Ariz., Jan. 14, 2015 /PRNewswire/ -- The U.S.
ReportsnReports.com offer “2014 Market Research Report on Global Radar Detector Industry” report from its database. Dallas, Texas (PRWEB) January 12, 2015
New capabilities designed to lengthen F/A-18C-D Hornet's relevance EL SEGUNDO, Calif., Jan.
DULLES, Va., Jan. 9, 2015 /PRNewswire/ -- The U.S.
A radar altimeter measures altitude above the terrain beneath an aircraft as opposed to a barometric altimeter which provides the distance above a pre-determined datum, usually sea level. Radar is the underpinning principle of the system. Radio waves that are reflected back from the ground are timed in order to calculate speed, distance, and time which are related to the each other and can be used to calculate the distance from one point to another. Lloyd Espenschied invented the radar...
Doppler Effect -- The Doppler effect is the apparent change in frequency or wavelength of a wave that is perceived by an observer moving relative to the source of the waves. For waves, such as sound waves, that propagate in a wave medium, the velocity of the observer and the source are reckoned relative to the medium in which the waves are transmitted. The total Doppler effect may therefore result from both motion of the source and motion of the observer. Each of these effects is analyzed...
- An improvised stockade; especially, one made of thorn bushes, etc.
- A village protected by such a structure.