3D radar

3D radar provides for radar coverage in three dimensions, unlike the more common 2D radar. While the normal 2D radar provides range and azimuth, the 3D radar provides elevation information with range and azimuth. Applications include weather monitoring, air defense and surveillance.

The information provided by 3D radar has long been required, particularly for air defence and interception. Interceptors must be told the altitude to climb to before making an intercept. Before the advent of single unit 3D radars, this was achieved with separate search radars (giving range and azimuth) and separate height finding radars that could examine a target to determine altitude. These had little search capability, so were directed to a particular azimuth first found by the primary search radar.

Techniques

Steered beam radars steer a narrow beam through a scan pattern to build a 3-D picture. Examples include NEXRAD doppler weather radar (which uses a parabolic dish) and the AN/SPY-1 Passive electronically scanned array radar employed by the Ticonderoga class of guided missile cruisers and other ships so equipped with the Aegis Combat System.

Radar

Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. A radar transmits radio waves or microwaves that reflect from any object in their path. A receive radar, which is typically the same system as the transmit radar, receives and processes these reflected waves to determine properties of the object(s).

Radar was secretly developed by several nations in the period before and during World War II. The term RADAR was coined in 1940 by the United States Navy as an acronym for RAdio Detection And Ranging. The term radar has since entered English and other languages as a common noun, losing all capitalization.

The modern uses of radar are highly diverse, including air and terrestrial traffic control, radar astronomy, air-defense systems, antimissile systems; marine radars to locate landmarks and other ships; aircraft anticollision systems; ocean surveillance systems, outer space surveillance and rendezvous systems; meteorological precipitation monitoring; altimetry and flight control systems; guided missile target locating systems; ground-penetrating radar for geological observations; and range-controlled radar for public health surveillance. High tech radar systems are associated with digital signal processing, machine learning and are capable of extracting useful information from very high noise levels.

Radar Online

RadarOnline.com is an American entertainment and gossip website that was first published as a print and online publication in September 2003 before becoming exclusively online. As of 2012 it is owned by the publisher American Media.

History

The magazine Radar, which published articles on entertainment, fashion, politics, and human interest, was founded and edited by Maer Roshan in September 2003. After a series of three test issues, he relaunched it in 2005 and again in 2006 with help from investors.Radar was awarded a General Excellence nomination by the American Society of Magazine Editors in 2007. Its website, RadarOnline.com, earned an audience of one million a month soon after it launched.

Despite its seeming success, the print magazine was suddenly shuttered in 2008, after its primary backer, billionaire Ron Burkle, who owned a substantial interest in Star and National Enquirer publisher American Media, withdrew. RadarOnline.com's founding staff was fired and replaced by reporters from the Enquirer and Star. RadarOnline.com was relaunched in March 2009 with a rebranding, focusing on celebrity items about gossip, fashion and pop culture. All of the articles previously published by RadarOnline.com were erased from the site.

Sonny Condell

Sonny Condell (born 1 July 1949, in Newtownmountkennedy, Ireland) is an Irish singer-songwriter, multi-instrumentalist, and graphic artist. He is mainly known as a member of the Irish bands Tír na nÓg and Scullion. He released some hits in Ireland as a solo artist like "Down In The City" in 1977 that he covered later with the Belgian singer Micha Marah on her album Voyage in 1998. For some years, Sonny has got his own solo band called Radar, although he still plays with Tír na nÓg and Scullion.

Discography

With Tramcarr 88

With Tír na nÓg

Solo

With Scullion