Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2008148188) SYSTEM AND METHOD FOR DECODING AUTOMATIC IDENTIFICATION SYSTEM SIGNALS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2008/148188 International Application No.: PCT/CA2008/000666
Publication Date: 11.12.2008 International Filing Date: 09.04.2008
IPC:
G01S 19/11 (2010.01) ,G08G 3/02 (2006.01) ,H04B 1/59 (2006.01) ,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
19
Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
01
Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
03
Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
10
providing dedicated supplementary positioning signals
11
wherein the cooperating elements are pseudolites or satellite radio beacon positioning system signal repeaters
G PHYSICS
08
SIGNALLING
G
TRAFFIC CONTROL SYSTEMS
3
Traffic control systems for marine craft
02
Anti-collision systems
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
1
Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
59
Responders; Transponders
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:
PEACH, Robert [CA/CA]; CA (UsOnly)
COM DEV INTERNATIONAL LTD. [CA/CA]; 155 Sheldon Drive Cambridge, Ontario N1R 7H6, CA (AllExceptUS)
Inventors:
PEACH, Robert; CA
Agent:
BERESKIN & PARR; 40 King Street West 40th Floor Toronto, Ontario M5H 3Y2, CA
Priority Data:
11/760,35808.06.2007US
Title (EN) SYSTEM AND METHOD FOR DECODING AUTOMATIC IDENTIFICATION SYSTEM SIGNALS
(FR) SYSTÈME ET PROCÉDÉ DE DÉCODAGE DE SIGNAUX D'UN SYSTÈME D'IDENTIFICATION AUTOMATIQUE
Abstract:
(EN) Various embodiments are described herein for a system and method of detecting Automatic Identification System (AIS) signals in space and decoding these signals. In one aspect, a system for performing this function is described which includes a receiver configured to receive the plurality of AIS signals and pre-process the plurality of AIS signals to produce digital input data, and a processing unit configured to process the digital input data to identify one or more candidate AIS message signals based on Doppler offsets associated with the digital input data, determine corresponding Doppler offset estimates and time estimates of the one or more candidate AIS message signals, decode the one or more candidate AIS message signals to obtain corresponding message segments and validate the decoded message segments for proper AIS formatting.
(FR) Divers modes de réalisation décrits présentement concernent un système et un procédé de détection de signaux de système d'identification automatique (AIS) dans l'espace et de décodage de ces signaux. Selon un aspect, l'invention concerne un système pour la réalisation de cette fonction qui comprend un récepteur configuré pour recevoir la pluralité de signaux du système d'identification automatique (AIS) et prétraiter la pluralité de signaux du système d'identification automatique (AIS) pour produire des données d'entrée numériques, et une unité de traitement configurée pour traiter les données d'entrée numériques pour identifier un ou plusieurs signaux de message candidats du système d'identification automatique (AIS) sur la base de décalages Doppler associés aux données d'entrées numériques, déterminer des estimées de décalages Doppler correspondantes et des estimées de temps du ou des signaux de message candidats du système d'identification automatique (AIS), décoder le ou les signaux de message candidats du système d'identification automatique (AIS) pour obtenir des segments de message correspondants et valider les segments de message décodés pour un formatage correct du système d'identification automatique (AIS).
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, 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, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, 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 Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MT, NL, NO, 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)