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.
- Priority
- Filed
- Granted
- Expired
- Today
11 members in 8 offices
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 0201818 | Sweden | A | |
| 0300988 | Sweden | W |
Members11
| Document | Office | Kind | |
|---|---|---|---|
| WO03107033A1 | World Intellectual Property Organization (WIPO) | A1 | |
| AU2003242101A1 | Australia | A1 | |
| SE522651C2 | Sweden | C2 | |
| EP1514134A1 | European Patent Office (EPO) | A1 | |
| US2005219115A1 | United States of America | A1 | |
| US7518543B2 | United States of America | B2 | |
| EP1514134B1 | European Patent Office (EPO) | B1 | |
| AT503196TThis record | Austria | T | |
| ATE503196T1 | Austria | T1 | |
| DE60336470D1 | Germany | D1 | |
| ES2362179T3 | Spain | T3 |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Ceased as to paragraph 5 lit. 3 law introducing patent treatiesCeasedRER | RER |
Numbers
- Application
- 3733736
Titles2
- German
- VERFAHREN ZUR BESTIMMUNG VON POSITIONEN VON ZIELEN DURCH BISTATISCHE MESSUNGEN UNTER VERWENDUNG VON DURCH DIE ZIELE GESTREUTEN SIGNALE
- English
- METHOD FOR DETERMINING POSITIONS OF TARGETS BY BISTATIC MEASUREMENTS USING SIGNALS SPREADED BY THE OBJECTIVES
Classification
- CPC, 2
- G01S13/003
- G01S13/53
- IPC, 3
- G01S13 00
- G01S13 53
- G01S13 87