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1. (WO2001004657) FAST ACQUISITION POSITION REPORTING SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/004657 International Application No.: PCT/US2000/018925
Publication Date: 18.01.2001 International Filing Date: 12.07.2000
Chapter 2 Demand Filed: 06.11.2000
IPC:
G01S 5/00 (2006.01) ,G01S 5/14 (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
5
Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations
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
5
Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations
02
using radio waves
14
Determining absolute distances from a plurality of spaced points of known location
Applicants: EAGLE EYE, INC.[US/US]; 45365 Vintage Park Plaza Suite 210 Dulles, VA 20166, US
Inventors: KILFEATHER, James, B.; US
SULLIVAN, Mark, C.; US
Agent: GOTTS, Lawrence, J. ; Shaw Pittman 2300 N Street, NW Washington, DC 20037-1128, US
Priority Data:
09/351,85212.07.1999US
Title (EN) FAST ACQUISITION POSITION REPORTING SYSTEM
(FR) SYSTEME DE COMPTE RENDU DE POSITION A ACQUISITION RAPIDE
Abstract:
(EN) A geographic tracking system (10) with minimal power and size required at the mobile terminal (18) collects observation data at the mobile terminal (18), forwards the data to a processor, which calculates the position. The mobile terminal (18) needs only to gather a few milliseconds of observation data, and to relay this observation data to the processor. The range from the satellite (14-17) (or other airborne transponder) to the terminal is determined using the known positions of an interrogating transmitter and a satellite, and a known terminal delay between the received signal and the transmission of the return signal, and the round trip time. An arc of locations is determined by computing an intersection of a sphere centered at the satellite having a radius given by the calculated range with a model of the Earth's surface.
(FR) L'invention concerne un système de repérage géographique (10) exigeant une puissance et une taille minimale au niveau du terminal mobile (18) qui recueille des données d'observation sur le terminal mobile (18) et retransmet ces données au processeur, lequel calcule la position. Le terminal mobile (18) n'a plus qu'à réunir quelques millisecondes de données d'observation et à relayer ces données d'observation au processeur. La portée entre le satellite (14-17) (ou tout autre transporteur de bord) et le terminal est déterminée à l'aide des positions connues d'un émetteur d'interrogation et d'un satellite, d'un retard de terminal connu entre le signal reçu et la transmission du signal de retour et de la durée totale du cycle. Pour déterminer un arc d'emplacements, on calcule, à l'aide d'un modèle de la surface terrestre, l'intersection d'une sphère centrée sur le satellite ayant un rayon donné par la portée calculée surface.
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Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CR, CU, CZ, DE, DK, DM, EE, 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, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)