Antenna Measurement Dominique Picard
نویسنده
چکیده
The antenna is an important element of radiocommunication, remote sensing and radiolocalisation systems. The measurement of the antenna radiation pattern characteristics allows one to verify the conformity of the antenna. The simplest measurement method consists in the direct far-field measurement. For large antennas, the necessary measurement distance raises a problem which was resolved by the introduction of compact ranges and near-field techniques. Compact range consists in a focusing system, as a reflector, which can create a plane wave at short distance. The principle of near-field techniques is to measure the field radiated by an antenna at a short distance on a given surface surrounding the antenna, then to calculate the far-field starting from the measured near-field. These last techniques also make it possible to have an excellent precision as required by the satellite antennas for example. The near-field techniques also make it possible to carry out the diagnosis of the antennas, i.e. to find defects on the antenna. The duration of the measurement of the large antennas, which claims a large number of measurement points, was reduced considerably by the use of rapid near-field assessment system, for which the mechanical displacement of the probe was replaced by the electronic scanning of a probes array.
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In-Situ Monitoring Method for Direction Finding Antennas
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PETER HALL, SPIRIDON PENEV, GE RARD KERKYACHARIAN and DOMINIQUE PICARD Centre for Mathematics and its Applications, Australian National University, Canberra, ACT 0200, Australia School of Mathematics, University of NSW, Sydney, NSW 2052, Australia Faculte Mathematiques et Informatiques, Universite de Picardie, 33 rue Saint-Leu, 80039 Amiens Cedex 01, France DeÂpartement de Mathematiques, Uni...
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Article history: Received 3 March 2009 Revised 17 July 2009 Accepted 10 January 2010 Available online 14 January 2010 Communicated by Dominique Picard
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Article history: Received 27 August 2014 Received in revised form 9 June 2015 Accepted 5 July 2015 Available online xxxx Communicated by Dominique Picard MSC: 60G05 60G17 60G20 60G52 60H40 42C40 46E35
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