Patent ID: 6583761
Filing Date: 2003-06-24
Classification: G01S

Abstract:
A method of position determination in a space, the method comprising the steps of:defining a local co-ordinate space through the arrangement of at least two transmitter/receiver devices with a number of antenna units arranged with a defined distribution on a spherical surface of the transmitter/receiver devices, in a space, in such a way that the transmitter/receiver devices are in defined relative positions at known horizontal distance h and vertical distance v; emitting a signal S1 via the antenna units of the first transmitter/receiver device and receiving of the signal S1 via the antenna units of the second transmitter/receiver device and determining the distance vector A, between the first transmitter/receiver device and the second transmitter/receiver device through a determination of the antenna unit of the second transmitter/receiver device with the maximum receiving strength of the signal S1 and emission of a signal S2 via the antenna units of the second transmitter/receiver as well as a determination of the distance vector A, between the second and the first transmitter/receiver device through a determination of the antenna unit of the first transmitter/receiver device with maximum receiving strength of the signal S2; determining the position of a third transmitter/receiver device arranged anywhere in the local co-ordinate space through emission of a signal S3 via the antenna units of the third transmitter/receiver device and receiving of the signal S3 via the antenna units of the first and second transmitter/receiver devices and determining the antenna units of the first transmitter/receiver device and the second transmitter/receiver device with maximum receiving strength of the signal S3, determining the direction vectors B1 and B2 as well as determining the intersection of the direction vectors for determining the position of the third transmitter/receiver device.