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1. (WO2010072494) METHOD FOR DETERMINING AZIMUTH AND ELEVATION ANGLES OF ARRIVAL OF COHERENT SOURCES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/072494 International Application No.: PCT/EP2009/065663
Publication Date: 01.07.2010 International Filing Date: 23.11.2009
IPC:
G01S 3/74 (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
3
Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
02
using radio waves
74
Multi-channel systems specially adapted for direction-finding, i.e. having a single aerial system capable of giving simultaneous indications of the directions of different signals
Applicants:
THALES [FR/FR]; 45 rue de Villiers F-92200 Neuilly sur Seine, FR (AllExceptUS)
FERREOL, Anne [FR/FR]; FR (UsOnly)
BRUGIER, Jeremy [FR/FR]; FR (UsOnly)
MORGAND, Philippe [FR/FR]; FR (UsOnly)
Inventors:
FERREOL, Anne; FR
BRUGIER, Jeremy; FR
MORGAND, Philippe; FR
Agent:
LUCAS, Laurent; Immeuble Visium 22, Avenue Aristide Briand F-94117 Arcueil Cedex, FR
Priority Data:
080740423.12.2008FR
Title (EN) METHOD FOR DETERMINING AZIMUTH AND ELEVATION ANGLES OF ARRIVAL OF COHERENT SOURCES
(FR) PROCEDE DE DETERMINATION DES ANGLES D'ARRIVEE EN AZIMUT ET EN ELEVATION DE SOURCES COHERENTES
Abstract:
(EN) The present invention relates to a method for jointly determining the azimuth angle θ and the elevation angle Δ of wave vectors of P waves in a system including an array (1001) of sensors, a plurality of waves among the P waves propagating according to coherent or substantially coherent paths between a source and said sensors, the method including at least the following steps: selecting a subset of sensors from among said sensors to form a linear subarray (1002) of sensors; applying, to the signals emitted by the selected subarray, an algorithm according to a single dimension for decorrelating the sources of the P waves; determining a first component w of said wave vectors by applying, to the signals observed in the sensors of the selected subarray, a goniometry algorithm according to the single dimension w; determining a second component u of said wave vectors by applying a goniometry algorithm according to the single dimension u on the signals emitted by the whole array of sensors; and determining θ and Δ from w and u.
(FR) La présente invention concerne un procédé de détermination conjointe de l'angle d'azimut θ et de l'angle d'élévation Δ des vecteurs d'ondes de P ondes dans un système comprenant un réseau (1001) de capteurs, plusieurs ondes parmi les P ondes se propageant selon des trajets cohérents ou sensiblement cohérents entre une source et lesdits capteurs, le procédé comprenant au moins les étapes suivantes : • sélectionner un sous-ensemble de capteurs parmi les dits capteurs pour former un sous-réseau linéaire (1002) de capteurs; • appliquer, sur les signaux issus du sous-réseau choisi, un algorithme suivant une seule dimension pour décorréler les sources des P ondes; • déterminer une première composante w desdits vecteurs d'onde en appliquant, sur les signaux observés sur les capteurs du sous-réseau choisi, un algorithme de goniométrie suivant la seule dimension w; • déterminer une deuxième composante u desdits vecteurs d'onde en appliquant un algorithme de goniométrie suivant la seule dimension u sur les signaux issus de l'ensemble du réseau de capteurs, •déterminer θ et Δ à partir de w et u.
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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: French (FR)
Filing Language: French (FR)
Also published as:
EP2368129US20120098703CN102317808FR2940461IN4832/DELNP/2011