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1. (WO2010084189) DEVICE AND METHOD FOR TRACKING A RADIONAVIGATION SIGNAL
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/084189 International Application No.: PCT/EP2010/050789
Publication Date: 29.07.2010 International Filing Date: 25.01.2010
Chapter 2 Demand Filed: 11.05.2010
IPC:
G01S 1/00 (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
1
Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
Applicants:
CENTRE NATIONAL D'ETUDES SPATIALES (C.N.E.S) [FR/FR]; 2, place Maurice Quentin F-75039 Paris Cedex 01, FR (AllExceptUS)
DE LA TOUR, Antoine [FR/FR]; FR (UsOnly)
Inventors:
DE LA TOUR, Antoine; FR
Agent:
BRUCK, Mathis; OFFICE ERNEST T. FREYLINER S.A. 234, route d'Arlon BP 48 L-8001 Strassen, LU
Priority Data:
09 5046426.01.2009FR
Title (EN) DEVICE AND METHOD FOR TRACKING A RADIONAVIGATION SIGNAL
(FR) DISPOSITIF ET PROCÉDÉ DE POURSUITE D'UN SIGNAL DE RADIONAVIGATION
Abstract:
(EN) The invention relates to a device for tracking a radionavigation signal that includes correlators (24) for correlating the signal with internal replicas of said signal, including phase and quadrature sub-carrier replicas, and a spreading waveform tracking loop (26). A discrimination unit (38) generates, based on the correlations, a spreading waveform control signal that controls the time deviations between the spreading waveform of the radionavigation signal and the internal replicas thereof. The discrimination unit (38) includes an ambiguous discriminator (42) and a non-ambiguous discriminator (44) respectively generating first and second time deviation signals. A selection unit (46, 48) selects the first or second time deviation signal as a control signal based on whether or not the first and second time deviation signals are concordant.
(FR) Un dispositif de poursuite de signal de radionavigation comprend des corrélateurs (24) pour corréler le signal avec des répliques internes de ce signal, dont des répliques de sous-porteuse en phase et en quadrature, et une boucle de poursuite de forme d'onde d'étalement (26). Une unité de discrimination (38)de celle-ci produit, en fonction des corrélations, un signal d'asservissement de forme d'onde d'étalement gouvernant les écarts temporels entre la forme d'onde d'étalement du signal de radionavigation et ses répliques internes. L'unité de discrimination (38) comprend un discriminateur ambigu (42) et un discriminateur non-ambigu (44) produisant respectivement un premier et un second signal de décalage temporel. Une unité de sélection (46, 48) sélectionne comme signal d'asservissement le premier ou le second signal de décalage temporel selon si les premier et second signaux de décalage temporel sont en concordance ou non.
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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, TH, 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:
EP2382484