Radiotekhnika
Publishing house Radiotekhnika

"Publishing house Radiotekhnika":
scientific and technical literature.
Books and journals of publishing houses: IPRZHR, RS-PRESS, SCIENCE-PRESS


Тел.: +7 (495) 625-9241

 

Antenna design study for the synthetic aperture radar installed on small class UAV

Keywords:

L. B. Ryazantsev – Ph.D. (Eng.), Senior Lecturer, Air Force Academy n.a. Prof. N.E. Zhukovsky and Yu.A. Gagarin (Voronezh). E-mail: kernel386@mail.ru


These days supplying a small-size synthetic-aperture radar on unmanned aerial vehicles (UAV) is an urgent problem. The quality of radar images provided by the synthetic-aperture radar (SAR) is, among other things, determined by the dynamic range of an output signal. One of the methods of its extension is to provide the invariable strength of the received signal, reflected from the ground re-gardless of the distance to it. This is possible through the cosecant antenna application or the use of the sensitive time control (STC) system. Cosecant antenna application is based on the special shape reflector antenna or phased arrays with corresponding aperture distributions in vertical plane. However, deployment of such antennae, C-band or L-band frequency in particular, on drones is technically challenging because of the existing limitations on aerodynamic characteristics of the external equipment and the maximum payload (max 4–5 kg). Unlike pulsed radar, STC system application in the FMCW radar, where the distance to the object is determined by frequency measurements, seems impossible. The article contains the techniques of reflector antenna shape and the aperture distribution of phased array synthesis, which provides the arbitrarily assigned cosecant antenna shape. On the ground of these methods the reflector antenna and the phased array is estimated in MATLAB. The results provide the evidence for the choice of cosecant antenna design with regard to its size limitations and requirements to range and width of the swath which are characteristic to the FMCW SAR, deployed on drones. Besides, the attainable antenna directivity values in the vertical plane that provide further justification of requirements to the average power transmitter and receiver sensitivity of the synthetic-aperture radar are estimated for the centimeter-waves antennae.
References:

 

  1. Bogomolov A.V., Kuprjashkin I.F., Likhachev V.P., Rjazancev L.B. Malogabaritnaja dvukhdiapazonnaja RSA dlja bespilotnogo aviacionnogo kompleksa // Sb. trudov XXIX Vserossijjskogo simpoziuma «Radiolokacionnoe issledovanie prirodnykh sred». SPb.: VKA im. A.F.Mozhajjskogo. 2015. Vyp. 11. S. 237–242.
  2. Antipov V.N., Koltyshev E.E., Mukhin V.V., Pechennikov A.V., Frolov A.JU., JAnkovskijj V.T. Radiolokacionnaja sistema bespilotnogo letatelnogo apparata // Radiotekhnika. 2006. № 7. S. 14–20.
  3. SHkolnyjj L.A. Radiolokacionnye sistemy vozdushnojj razvedki, deshifrirovanie radiolokacionnykh izobrazhenijj. M.: VVIA im. prof. N.E. ZHukovskogo. 2008.
  4. Kuprjashkin I.F, Likhachev V.P. Kosmicheskaja radiolokacionnaja semka zemnojj poverkhnosti v uslovijakh pomekh. Voronezh: Izdatelsko-poligraficheskijj centr «Nauchnaja kniga». 2014.
  5. Silver S.Microwave antenna theory and design. 1949.
  6. Lacomme P., Hardange J., Marchais J., Normant E. Air and spaceborne radar systems: An introduction. William Andrew Publishing. 2001.
  7. Verba V.S., Neronskijj L.B., Osipov I.G., Turuk V.EH. Radiolokacionnye sistemy zemleobzora kosmicheskogo bazirovanija. M.: Radiotekhnika. 2010.
  8. Milligan T.A.Modern antenna design. 2nd ed. John Wiley & Sons, Inc. 2005.
  9. ZHuk M.S., Molochkov JU.B. Proektirovanie antenno-fidernykh ustrojjstv. M.: EHnergija. 1966.
  10. Elliott R.S.Antenna theory and design. Wiley–IEEE Press.2003.
  11. Balanis C.A. Antenna theory: analysis and design. 2nd ed. John Willey & Sons, Inc. 1996.
  12. Orfanidis S.J.Electromagnetic waves and antennas. RutgersUniversity. 2008.
  13. Mailloux R.J.Phased array antenna handbook. Artech House, Inc. 2005.
  14. Sazonov D.M. Antenny i ustrojjstva SVCH. M.: Vysshaja shkola. 1988.

 

© Издательство «РАДИОТЕХНИКА», 2004-2017            Тел.: (495) 625-9241                   Designed by [SWAP]Studio