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1. (WO2007003455) APPARATUS AND METHOD FOR DETERMINING RECEIVER GROUP DELAYS IN A MULTILATERATION SYSTEM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/003455 International Application No.: PCT/EP2006/062073
Publication Date: 11.01.2007 International Filing Date: 04.05.2006
IPC:
G01S 5/02 (2010.01)
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
02
using radio waves
Applicants:
ROKE MANOR RESEARCH LIMITED [GB/GB]; Old Salisbury Lane Romsey Hampshire SO51 0ZN, GB (AllExceptUS)
FISHER, James Joseph [GB/GB]; GB (UsOnly)
GALLOWAY, Philip Edward Roy [GB/GB]; GB (UsOnly)
QUILTER, Timothy John [GB/GB]; GB (UsOnly)
WEEDON, Robert John [GB/GB]; GB (UsOnly)
Inventors:
FISHER, James Joseph; GB
GALLOWAY, Philip Edward Roy; GB
QUILTER, Timothy John; GB
WEEDON, Robert John; GB
Agent:
MORGAN, Marc; Corporate Shared Services Siemens Ag PO Box 22 16 34 80506 Munich, DE
Priority Data:
0513483.801.07.2005GB
Title (EN) APPARATUS AND METHOD FOR DETERMINING RECEIVER GROUP DELAYS IN A MULTILATERATION SYSTEM
(FR) APPAREIL ET PROCEDE PERMETTANT DE DETERMINER DES RETARDS DE GROUPES DE RECEPTEURS DANS UN SYSTEME DE MULTILATERATION
Abstract:
(EN) In a multilateration system receivers are grouped into two groups. The first group is used to determine a position of a signal source, for example, an aircraft equipped with a SAR transponder. From the determined position, predicted time of arrival values are produced for the second group receivers. These are compared with the actual time of arrival values for the signals arriving at the second group receivers. A difference is determined and then the variation of that difference is determined as the aircraft travels in its track. The groupings are then varied and further variations determined. When the minimum variation is determined an alert is given that the second group has a receiver which is operating with a larger than desirable group time delay.
(FR) Dans un système de multilatération, des récepteurs sont regroupés en deux groupes. On utilise le premier groupe pour déterminer la position d'une source de signaux, par exemple, un aéronef équipé d'un transpondeur SAR. A partir de la position déterminée, on produit une valeur probable d'heure d'arrivée pour le second groupe de récepteurs. Ces valeurs sont comparées avec les valeurs constatées de l'heure d'arrivée pour les signaux atteignant les récepteurs du second groupe. On calcule une différence et l'écart de cette différence pendant que l'aéronef transite sur sa piste. On fait varier les groupements, puis on calcule les variations. Lorsqu'on calcule une variation minimum, on obtient une alerte signifiant que le second groupe comprend un récepteur qui fonctionne avec un temps de retard de groupe plus grand que souhaitable.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, 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, HU, IE, IS, IT, LT, LU, LV, MC, NL, 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)
Also published as:
EP1899743ES2342975US20090027270PT1899743GB2427973