Waveform design for locating system

A system for the localization of at least one tag device, the system comprising:

• the at least one tag device configured to transmit a tag signal;
• at least one known position device configured to transmit a reference signal;
• and
• a localization device configured to localize the at least one tag device,
• wherein the system is configured so as to associate the at least one tag device to one of the at least one known position device on the basis of distance determinations between the at least one tag device and each of the of known position devices.

A method for acquiring a phase difference between a first wireless and a second wireless signals using at least a first and a second PDoA receivers, wherein at least one of the first and second signals is subdivided into a first time slot and a second time slot at different frequencies, the method comprising:

• calculating first phase differences;
• calculating second phase differences as a differences between two first phase differences;
• and
• calculating third phase differences as differences between two second phase differences,
• wherein one of said phase differences is performed between values associated to different wireless signals;
• another one of said phase differences is performed between values associated to different PDoA receivers;
• another one of said phase differences is performed between values associated to different time slots.

A method for localizing at least one tag device using the method for acquiring a phase difference between a first wireless and a second wireless signals using at least a first and a second PDoA receivers, wherein at least one of the first and second signals is subdivided into a first time slot and a second time slot at different frequencies, the method comprising:

• calculating first phase differences;
• calculating second phase differences as a differences between two first phase differences;
• and
• calculating third phase differences as differences between two second phase differences,
• wherein one of said phase differences is performed between values associated to different wireless signals;
• another one of said phase differences is performed between values associated to different PDoA receivers;
• another one of said phase differences is performed between values associated to different time slots,
• wherein the first wireless signal is transmitted by the tag device and the second wireless signal is transmitted by a known position device,
• further comprising deriving the position of the at least one tag device on the basis of the third phase difference.

A method for localizing at least one tag device, the method comprising:

• transmitting, by the tag device, a tag signal;
• transmitting, by at least one known position device, a reference signal;
• and
• deriving the position of the at least one tag device on the basis of the phase difference of arrival, PDoA, of the tag signal and the reference signal,
• wherein at least one of the tag signal and the reference signal is a frequency-hopping signal.

A method for localizing at least one tag device in a system comprising a plurality of known position devices, the method comprising:

• associating the at least one tag device to one of the at least one known position device on the basis of distance determinations between the at least one tag device and each of the of known position devices;
• transmitting a tag signal from the at least one tag device;
• transmitting a reference signal from at least one known position device configured to;
• and
• deriving the position of the at least one tag device on the basis of the tag signal and the reference signal.

A non-transitory digital storage medium having a computer program stored thereon to perform the method for acquiring a phase difference between a first wireless and a second wireless signals using at least a first and a second PDoA receivers, wherein at least one of the first and second signals is subdivided into a first time slot and a second time slot at different frequencies, the method comprising:

• calculating first phase differences;
• calculating second phase differences as a differences between two first phase differences;
• and
• calculating third phase differences as differences between two second phase differences,
• wherein one of said phase differences is performed between values associated to different wireless signals;
• another one of said phase differences is performed between values associated to different PDoA receivers;
• another one of said phase differences is performed between values associated to different time slots,
• when said computer program is run by a computer.

A non-transitory digital storage medium having a computer program stored thereon to perform the method for localizing at least one tag device using the method for acquiring a phase difference between a first wireless and a second wireless signals using at least a first and a second PDoA receivers, wherein at least one of the first and second signals is subdivided into a first time slot and a second time slot at different frequencies, the method comprising:

• calculating first phase differences;
• calculating second phase differences as a differences between two first phase differences;
• and
• calculating third phase differences as differences between two second phase differences,
• wherein one of said phase differences is performed between values associated to different wireless signals;
• another one of said phase differences is performed between values associated to different PDoA receivers;
• another one of said phase differences is performed between values associated to different time slots,
• wherein the first wireless signal is transmitted by the tag device and the second wireless signal is transmitted by a known position device,
• further comprising deriving the position of the at least one tag device on the basis of the third phase difference,
• when said computer program is run by a computer.

A non-transitory digital storage medium having a computer program stored thereon to perform the method for localizing at least one tag device, the method comprising:

• transmitting, by the tag device, a tag signal;
• transmitting, by at least one known position device, a reference signal;
• and
• deriving the position of the at least one tag device on the basis of the phase difference of arrival, PDoA, of the tag signal and the reference signal,
• wherein at least one of the tag signal and the reference signal is a frequency-hopping signal,
• when said computer program is run by a computer.

A non-transitory digital storage medium having a computer program stored thereon to perform the method for localizing at least one tag device in a system comprising a plurality of known position devices, the method comprising:

• associating the at least one tag device to one of the at least one known position device on the basis of distance determinations between the at least one tag device and each of the of known position devices;
• transmitting a tag signal from the at least one tag device;
• transmitting a reference signal from at least one known position device configured to;
• and
• deriving the position of the at least one tag device on the basis of the tag signal and the reference signal,
• when said computer program is run by a computer.