AT503196T

Method for determining positions of targets by bistatic measurements using signals scattered by the targets

Abstract

A method for determining the positions of targets in a position space using dispersed objectives signals, which comprises using a number, spread in known points in the position space, of transmitters and receivers of electromagnetic or acoustic signals, so that refers to each bistatic pair of transmitter and receiver and measuring device, which further comprises analyzing the received signals, including determining time instants of transmission and reception according to generally accepted principles of radar and parameterisation of the received signals depending on the route or path of propagation between transmission point and reception point, but without the conventional requirement radar directional information, so that the target positions are determined, primarily, by selecting the position of the transmitters and receivers and the detection range of the measuring facilities so that a target at an arbitrary point within in the position space can be measured by scattering in the target by at least four measurement facilities in cooperation; selecting an even number of measurement locations in cooperation, which are, however, at least 4 for determination; associating measurements of target by calculating, in two independent ways, two sets of sums of distances between transmission points and targets, and, respectively, between objectives and receiving points based on bistatic distances, measured through goals, for installations selected measurement, characterized by classifying or sorting said two sums with respect to the distance, comparing these with each other and establishing that the sums, calculated in the two different ways, which correspond with each other, while considering a margin of error that has been determined in advance, they are set to correspond to conceivable targets; and calculating the positions of the targets with respect to a system of equations for the measured distances biestáticamente, improving and completing the association of measurement target by performing calculations for speed Doppler measurements biestáticamente, corresponding to calculations for distances, and establishing that sums, calculated in the two different ways, which correspond with each other, while considering a margin of error that has been determined in advance, are set to correspond to targets.

Term

Term ended

Expired 13 June 2023, 3.3 years ago.

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11 members in 8 offices

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DocumentOfficeKindDate
0201818SwedenA
0300988SwedenW

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DocumentOfficeKind
WO03107033A1World Intellectual Property Organization (WIPO)A1
AU2003242101A1AustraliaA1
SE522651C2SwedenC2
EP1514134A1European Patent Office (EPO)A1
US2005219115A1United States of AmericaA1
US7518543B2United States of AmericaB2
EP1514134B1European Patent Office (EPO)B1
AT503196TThis recordAustriaT
ATE503196T1AustriaT1
DE60336470D1GermanyD1
ES2362179T3SpainT3