Method for the continuous real time tracking of the position of at least one mobile object as well as an associated device
First Claim
1. A method for the continuous real time tracking of the position of a plurality of mobile objects in a defined multidimensional space, comprising:
- attaching transmitter modules to the mobile objects;
receiving signals from the transmitter modules by a stationary receiving and signal processing network; and
processing the received signals centrally,wherein the signals emitted by the transmitter modules are electromagnetic waves which are transmitted within a frequency band that is used as a single channel without a feedback channel,wherein a communication process between the transmitter modules and receivers of the receiving and signal processing network is based on a principle of pseudo-random time division multiplexing using non synchronized pseudo-random patterns, such that each transmitter module emits a characteristic transmission pattern having a sequence of burst transmissions that occur at pseudo-random times,wherein the burst transmissions are characterized by a low cross correlation, so that there is a low probability of transmitting burst transmissions at the same time, andwherein the characteristic transmission patterns of the transmitter modules are already known to the receiving and signal processing network, and after each burst transmission from a transmitter module is received by the receivers, the receiving and signal processing network calculates a search range for each receiver during which the next burst transmission of the characteristic transmission pattern of the same transmitter module is expected to arrive, the search range having a duration that is substantially longer than the duration of the burst transmissions.
1 Assignment
0 Petitions
Accused Products
Abstract
In a method for the continuous real time tracking of the position of at least one mobile object in a defined multidimensional space, at least one mobile transmitter module is attached to at least one mobile object and the signals from the at least one module are received by a stationary receiving and signal processing network and then centrally processed. The signals emitted by each transmitter module are electromagnetic waves sent within a frequency band range using time division multiplexing techniques. Due to the fact that the frequency band is used as a single channel for the purpose of maximizing the accuracy with which a position is detected, and due also to the fact that the communication process between the transmitters and the receivers is based on the principle of pseudo-random time division multiplexing using burst transmissions of low cross correlation with non synchronized pseudo-random patterns, there is created a method for the continuous tracking of the position of one or more mobile objects at any time and in any place which is of very high positional resolution and has a temporal resolution of just a few milliseconds.
-
Citations
21 Claims
-
1. A method for the continuous real time tracking of the position of a plurality of mobile objects in a defined multidimensional space, comprising:
-
attaching transmitter modules to the mobile objects; receiving signals from the transmitter modules by a stationary receiving and signal processing network; and processing the received signals centrally, wherein the signals emitted by the transmitter modules are electromagnetic waves which are transmitted within a frequency band that is used as a single channel without a feedback channel, wherein a communication process between the transmitter modules and receivers of the receiving and signal processing network is based on a principle of pseudo-random time division multiplexing using non synchronized pseudo-random patterns, such that each transmitter module emits a characteristic transmission pattern having a sequence of burst transmissions that occur at pseudo-random times, wherein the burst transmissions are characterized by a low cross correlation, so that there is a low probability of transmitting burst transmissions at the same time, and wherein the characteristic transmission patterns of the transmitter modules are already known to the receiving and signal processing network, and after each burst transmission from a transmitter module is received by the receivers, the receiving and signal processing network calculates a search range for each receiver during which the next burst transmission of the characteristic transmission pattern of the same transmitter module is expected to arrive, the search range having a duration that is substantially longer than the duration of the burst transmissions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A system for transmitting electromagnetic waves for use in a method for continuous real time tracking of the position of mobile objects in a defined multidimensional space, comprising:
-
a plurality of transmitter modules which are attached to the mobile objects; and a stationary receiving and signal processing network for receiving and processing signals transmitted by the transmitter modules, said signals being waves which are transmitted in a frequency band that is used as a single channel without a feedback channel, wherein a communication process between the transmitter modules and receivers of the receiving and signal processing network is based on a principle of pseudo-random time division multiplexing with non synchronized pseudo-random patterns, such that each transmitter module emits a characteristic transmission pattern having a sequence of burst transmissions that occur at pseudo-random times, wherein the burst transmissions have a low cross correlation, so that there is a low probability of transmitting burst transmissions at the same time, and wherein the characteristic transmission patterns of the transmission modules is already known to the receiving and signal processing network, and after each burst transmission from a transmitter module is received by the receivers, the receiving and signal processing network calculates a search range for each receiver during which the next burst transmission of the characteristic transmission pattern of the same transmitter module is expected to arrive, the search range having a duration that is substantially longer than the duration of the burst transmissions.
-
-
19. A method for the continuous real time tracking of the position of a mobile object, comprising:
-
attaching a mobile transmitter module to the mobile object; placing at least one reference transmitter module at at least one known position; and receiving signals emitted by the transmitter modules with a plurality of receivers of a receiving and signal processing network, wherein an available frequency band is used as a single channel without a feedback channel; wherein a communication process between the receivers and the mobile transmitter module is based on a principle of pseudo-random time division multiplexing using non synchronized pseudo-random patterns, such that the mobile transmitter module emits a characteristic transmission pattern having a sequence of burst transmissions that occur at pseudo-random times, and wherein the characteristic transmission pattern of the mobile transmitter module is already known to the receiving and signal processing network, and after each burst transmission from the mobile transmitter module is received by the receivers, the receiving and signal processing network calculates a search range for each receiver during which the next burst transmission of the characteristic transmission pattern of the mobile transmitter module is expected to arrive, the search range having a duration that is substantially longer than the duration of the burst transmissions.
-
-
20. A method for the continuous real time tracking of the position of a mobile object in a defined multidimensional space in which-at least one transmitter module is disposed, comprising:
-
attaching said at least one transmitter module to the mobile object; receiving signals from the at least one transmitter module by a stationary receiving and signal processing network; and processing the received signals centrally, wherein the signals emitted by the at least one transmitter module are electromagnetic waves which are transmitted within a frequency band that is used as a single channel without a feedback channel, wherein a communication process between the at least one transmitter module and receivers of the receiving and signal processing network is based on a principle of pseudo-random time division multiplexing using non synchronized pseudo-random patterns, such that each at least one transmitter module emits a characteristic transmission pattern having a sequence of burst transmissions that occur at pseudo-random times, wherein the burst transmissions are characterized by a low cross correlation, so that there is a low probability of transmitting burst transmissions at the same time, and wherein the characteristic transmission pattern of the at least one transmitter module is already known to the receiving and signal processing network, and after each burst transmission from a transmitter module is received by the receivers, the receiving and signal processing network calculates a search range for each receiver during which the next burst transmission of the characteristic transmission pattern of the same transmitter module is expected to arrive, the search range having a duration that is substantially longer than the duration of the burst transmissions.
-
-
21. A method for the continuous real time tracking of the position of a mobile object in a defined multidimensional space in which a plurality of transmitter modules are disposed, comprising:
-
attaching one of said transmitter modules to the mobile object; receiving signals from the transmitter modules by a stationary receiving and signal processing network; and processing the received signals centrally, wherein the signals emitted by the transmitter modules are electromagnetic waves which are transmitted within a frequency band that is used as a single channel without a feedback channel, wherein a communication process between the transmitter modules and receivers of the receiving and signal processing network is based on a principle of pseudo-random time division multiplexing using non synchronized pseudo-random patterns, such that each transmitter emits a characteristic transmission pattern having a sequence of burst transmissions that occur at pseudo-random times, wherein the burst transmissions are characterized by a low cross correlation, so that there is a low probability of transmitting burst transmissions at the same time, and wherein the characteristic transmission patterns of the transmitter modules is already known to the receiving and signal processing network, and after each burst transmission from a transmitter module is received by the receivers, the receiving and signal processing network calculates a search range for each receiver during which the next burst transmission of the characteristic transmission pattern of the same transmitter module is expected to arrive, the search range having a duration that is substantially longer than the duration of the burst transmissions.
-
Specification