Editing Plan position indicator (section)

==Bibliography==
* Sir Bernard Lovell ''ECHOES OF WAR : The Story of H2S Radar'' {{ISBN|0-85274-317-3}}
* ''Adapted from {{usurped|1=[https://web.archive.org/web/20070207084605/http://www.vectorsite.net/ttwiz_04.html Microwave Radar At War (1)]}} . There is an open source verification for this text on the home page {{usurped|1=[https://web.archive.org/web/20011123111449/http://www.vectorsite.net/index.html Greg Goebel / In The Public Domain]}}.''
* A. P. Rowe: ''One Story of Radar'' - Camb Univ Press - 1948
* Dudley Saward, ''Bernard Lovell: A Biography'' - Robert Hale - 1984
* Norman Longmate ''The Bombers: the RAF offensive against Germany, 1939-1945'', Hutchins & Co, (1983), {{ISBN|0-09-151580-7}}
* E. G. Bowen ''Radar Days'' {{ISBN|0-7503-0586-X}}
* [[David Atlas]], ''Radar in Meteorology: [[Louis J. Battan|Battan Memorial]] and 40th Anniversary Radar Meteorology Conference'', published by [[American Meteorological Society]], [[Boston]], 1990, 806 pages, {{ISBN|0-933876-86-6}}, AMS Code RADMET.
* Yves Blanchard, ''Le radar, 1904-2004: histoire d'un siècle d'innovations techniques et opérationnelles '', published by Ellipses, [[Paris]], [[France]],  2004 {{ISBN|2-7298-1802-2}}
* Brown, Louis. ''A Radar History of World War II: Technical and Military Imperatives'', Philadelphia, Pa.: Institute of Physics Publishing, 1999.
* [[Richard Doviak|R. J. Doviak]] et [[Dusan S. Zrnic|D. S. Zrnic]], ''Doppler Radar and Weather Observations'', Academic Press. Seconde Edition, [[San Diego]] Cal., 1993 p.&nbsp;562.
* Roger M. Wakimoto and Ramesh Srivastava, ''Radar and Atmospheric Science: A Collection of Essays in Honor of David Atlas'', publié par l'American Meteorological Society, Boston, August 2003. Series: Meteorological Monograph, Volume 30, number 52, 270 pages, {{ISBN|1-878220-57-8}}; AMS Code MM52.