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1. (WO2004097451) RFI SUPPRESSION IN SAR
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/097451    International Application No.:    PCT/SE2004/000654
Publication Date: 11.11.2004 International Filing Date: 26.04.2004
Chapter 2 Demand Filed:    11.11.2004    
IPC:
G01S 7/02 (2006.01), G01S 7/40 (2006.01), G01S 13/02 (2006.01), G01S 13/90 (2006.01)
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (publ) [SE/SE]; S-164 83 Stockholm (SE) (For All Designated States Except US).
HELLSTEN, Hans [SE/SE]; (SE) (For US Only)
Inventors: HELLSTEN, Hans; (SE)
Agent: MOLKER, Anders; c/o Ericsson AB, Patent Unit Radio Networks, S-431 84 Mölndal (SE)
Priority Data:
0301231-7 25.04.2003 SE
Title (EN) RFI SUPPRESSION IN SAR
(FR) SUPPRESSION DE RFI DANS UN RADAR SAR
Abstract: front page image
(EN)A filter scheme for broadcast interference cancellation that is computationally efficient and numerically robust Airborne Low Frequency Synthetic Aperture Radar (SAR) operating in the VHF and UHF bands has been shown. At least interference Doppler filtering or interference cancellation is utilised. The interference cancellation involves prediction of the interference for each particular reception interval of mixed interference and radar ground response. This prediction is then coherently subtracted from the incoming signal.
(FR)L'invention concerne un schéma de filtrage Radar à Ouverture Dynamique (SAR) basse fréquence aéroporté, destiné à l'élimination d'interférence de radiodiffusion, efficace en termes de calcul et robuste en termes numériques, fonctionnant dans les VHF et UHF. On utilise au moins un filtrage Doppler d'interférence ou une élimination d'interférence. L'élimination d'interférence comprend la prédiction de l'interférence de chaque intervalle de réception particulier d'interférence et réponse balise radar mélangées. Cette prédiction est alors soustraite de façon cohérente du signal entrant.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)