Softverski model estimatora radijalne brzine ciljeva / Software model of a radial velocity estimator

• Main Author: Dejan S. Ivković
• Format: Article
• Language: English
• Published: University of Defence in Belgrade 2010-04-01
• Series: Vojnotehnički Glasnik
• Subjects: softverski radar; estimator radijalne brzine; simulirani cilj; realni cilj; software radar; radial velocity estimator; simulated target; real target
• Online Access: http://scindeks.ceon.rs/Article.aspx?artid=0042-84691002071I
• ISSN: 0042-8469; 2217-4753

U radu je softverski modelovan novi blok u delu za obradu signala softverskog radarskog prijemnika, koji je nazvan estimator radijalne brzine. Detaljno je opisan način procene Doplerove frekvencije na osnovu MUSIC algoritma i ukratko prikazan način rada pri merenju. Svi parametri pri merenju klatera i detekcije simuliranih i realnih ciljeva dati su tabelarno, a rezultati grafički. Na osnovu analize prikazanih rezultata može se zaključiti da se pomoću projektovanog estimatora radijalne brzine može precizno proceniti Doplerov pomak u reflektovanom signalu od pokretnog cilja, a samim tim može se precizno odrediti njegova brzina. / In all analyses the MUSIC method has given better results than the FFT method. The MUSIC method proved to be better at estimation precision as well as at resolving two adjacent Doppler frequencies. On the basis of the obtained results, the designed estimator of radial velocity can be said to estimate Doppler frequency in the reflected signal from a moving target precisely, and, consequently, the target velocity. It is thus possible to improve the performances of the current radar as far as a precise estimation of velocity of detected moving targets is concerned.