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2009, vol. 57, br. 3, str. 58-79
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Zona detekcije radara pod dejstvom aktivnog ometanja
Radar detection zone under active jamming
Sažetak
U radu su simulirane karakteristike radara u prisustvu samozaštitnog ometača i ometača iz zone. Promenom parametara radara, ometača i njihovog međusobnog položaja korisnik može lako da uoči promene karakteristika radara. Pri simulaciji signal ometača simuliran je preko temperature šuma sistema. Termički šum prijemnika i antene takođe je uračunat. Simulirana je antena pravougaonog oblika sa uniformnom raspodelom polja u vertikalnoj ravni i Tejlorovom raspodelom polja u horizontalnoj ravni. Uticaj višestrukog prostiranja talasa takođe je uračunat, jer znatno utiče na karakteristike radara.
Abstract
The performance of a radar in the presence of a standoff and a self-jammer is simulated. By varying the radar and jammer parameters and geometry, the user can study the effects of the jammer on the radar performance. The temperature is used in the radar equation to access the impact of jammer power on the radar SNR. The thermal noise introduced by the receiver and antenna can also be included. The antenna is a rectangular aperture uniformly illuminated in elevation and represented by a sampled aperture with a Taylor distribution in azimuth. Multipath (i.e. the interference of a ground-reflected wave with the direct wave) can significantly affect the radar performance.
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