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1. (WO2010074790) METHOD AND SYSTEM FOR TARGET DETECTION AND ANGLE ESTIMATION BASED ON A RADAR SIGNAL
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/074790 International Application No.: PCT/US2009/059551
Publication Date: 01.07.2010 International Filing Date: 05.10.2009
IPC:
G01S 13/44 (2006.01)
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02
Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06
Systems determining position data of a target
42
Simultaneous measurement of distance and other coordinates
44
Monopulse radar, i.e. simultaneous lobing
Applicants:
LOCKHEED MARTIN CORPORATION [US/US]; 6801 Rockledge Drive Bethesda, MD 20817, US (AllExceptUS)
YU, Kai-Bor [US/US]; US (UsOnly)
Inventors:
YU, Kai-Bor; US
Agent:
HOWARD, Edward, J.; Howard IP Law Group PC PO Box 226 Ft. Washington, PA 19034, US
Priority Data:
12/245,38103.10.2008US
Title (EN) METHOD AND SYSTEM FOR TARGET DETECTION AND ANGLE ESTIMATION BASED ON A RADAR SIGNAL
(FR) PROCÉDÉ ET SYSTÈME DE DÉTECTION DE CIBLE ET D'ESTIMATION D'ANGLE SUR LA BASE D'UN SIGNAL RADAR
Abstract:
(EN) A method for target detection and angle estimation in a radar system includes receiving a signal from a radar array; based on the received signal, performing monopulse beamforming to obtain one or more monopulse beams; based on the monopulse beams, determining monopulse ratios; using maximum likelihood estimation based on the determined monopulse ratios to determine a monopulse ratio estimate corresponding to a maximum of a likelihood function; accessing a table correlating monopulse ratio estimates and target angle values and determining from the table an estimated target angle; accessing a complex target amplitude corresponding to the estimated target angle, comparing the complex target amplitude to a threshold; and if, based on the step of comparing, the target amplitude exceeds the threshold, providing an output signal indicative of target detection and the estimated target angle.
(FR) Un procédé de détection et d'estimation de l'angle d'une cible dans un système radar consiste à recevoir un signal d'un réseau radar; sur la base du signal reçu, à effectuer une formation de faisceau de type monopulse pour obtenir un ou plusieurs faisceaux monopulse; sur la base des faisceaux monopulse, à déterminer des rapports monopulse, à utiliser une estimation par maximum de vraisemblance basée sur les rapports monopulse déterminés pour estimer le rapport monopulse correspondant à un maximum d'une fonction de vraisemblance; à accéder à une table d'amplitudes cibles complexes correspondant à l'angle de cible estimé en comparant l'amplitude cible complexe à un seuil; et si, sur la base de l'étape de comparaison, l'amplitude cible dépasse le seuil, à fournir un signal de sortie représentatif de la détection d'une cible et de l'angle estimé de la cible.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (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, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, 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)