350 rub
Journal Achievements of Modern Radioelectronics №7 for 2017 г.
Article in number:
Поступила 28 апреля 2017 г. Justification of requirements to the digital signal processing system for small-size FMCW SAR with accounting amplitude-frequency correction of signals and oversampling
Type of article:
scientific article
UDC: 621.396.962.2
Keywords:
FMCW SAR
dynamic range
frequency response
ADC bit depth
unmanned aerial vehicle
oversampling.
Authors:
L.B. Ryazantsev – Ph.D. (Eng.), Senior Lecturer, MTSC Air Forces «MAA named professor N.E. Zhukovsky and Y.A. Gagarin» (Voronezh)
E-mail: kernel386@mail.ru
Abstract:
The requirements for the dynamic range of an analog-to-digital converter of a radar with a synthetic aperture of an antenna with FMCW signal are considered. It is shown that the dynamic range of the digital signal processing system can be expanded by applying amplitude correction of the intermediate frequency signal and taking into account the increase in the effective ADC bit capacity when digitizing the noisy signal (the oversampling effect).
Pages: 33-38
References
- Likhachev V.P., Ryazancev L.B., Cherednikov I.Yu. Primenenie bespilotnihkh letateljnihkh apparatov dlya vedeniya takticheskoyj radiolokacionnoyj razvedki // Voennaya mihslj. 2016. № 3. S. 24–28.
- Shkoljnihyj L.A. Radiolokacionnihe sistemih vozdushnoyj razvedki, deshifrirovanie radiolokacionnihkh izobrazheniyj. M.: VVIA im. Prof. N.E. Zhukovskogo. 2008.
- Michael I. Duersch A very small, low-power LFM-CW synthetic aperture radar. – Brigham Young University. 2004.
- Ryazancev L.B. Obosnovanie konstrukcii antennoyj sistemih RLS s sintezirovannoyj aperturoyj dlya BLA malogo klassa // Antennih. 2016. № 5. S. 10–15.
- Vinickiyj A.S. Ocherk osnov radiolokacii pri neprerihvnom izluchenii radiovoln. M.: Sov. radio. 1961.
- Kester W. Taking the Mystery out of the Infamous Formula, «SNR = 6.02N + 1.76dB», and Why You Should Care. URL: http://www.analog.com/media/ru/training-seminars/tutorials/MT-001.pdf. (Data obratheniya: 20.11.2016).
- Bogomolov A.V., Kupryashkin I.F., Likhachev V.P., Ryazancev L.B. Malogabaritnaya dvukhdiapazonnaya RSA dlya bespilotnogo aviacionnogo kompleksa. Trudih XXIX Vseross. simpoziuma «Radiolokacionnoe issledovanie prirodnihkh sred» / Pod obth. red. M.M. Penjkova. SPb.: VKA imeni A.F.Mozhayjskogo. 2015. V. 11. S. 237–242.
- Verba V.S., Neronskiyj L.B., Osipov I.G., Turuk V.Eh. Radiolokacionnihe sistemih zemleobzora kosmicheskogo bazirovaniya. M.: Radiotekhnika. 2010.
- Analog to digital converters. Analog devices inc. URL: http://www.analog.com/en/products/analog-to-digital-converters/ad-converters.html.
- Peyjton A. Dzh., Volsh V. Analogovaya ehlektronika na operacionnihkh usilitelyakh. M.: Binom. 1994.
Date of receipt: 28 апреля 2017 г.