公开(公告)号：US09678195B2

公开(公告)日：2017-06-13

申请号：US14765378

申请日：2014-01-31

申请人： TAKEMETUIT INC.

发明人： Raymond Mayer

IPC分类号： G01S5/26 ,  G01S5/18 ,  H04W64/00

CPC分类号： G01S5/26 ,  G01S5/18 ,  H04W64/00

摘要： A method of determining of a true time of arrival of an energy pulse in a positioning system using arrivals times of such pulses at a device after emission of the pulses from respective transmitters. A sampled signal is cross-correlated with the expected form of the energy pulse from the transmitter, and a highest peak in the correlated signal is located and selected to represent a possible time of arrival of the energy pulse. A sequentially preceding peak in the correlated signal is then selected has its magnitude compared with a threshold. This step is repeated until the magnitude of the currently selected peak is less than the threshold, at which point the last-selected peak whose magnitude exceeded the threshold marks the true time of arrival. This process avoids false time of arrival readings caused by reflected pulses.

公开(公告)号：US20240280660A1

公开(公告)日：2024-08-22

申请号：US18599549

申请日：2024-03-08

申请人： TAKEMETUIT INC.

发明人： NICK BARKER ,  VIMALKUMAR BHANDARI ,  CHRISTOPHER HENRIKSON

IPC分类号： G01S1/04 ,  G01R23/165 ,  G01S1/72 ,  G01S1/76 ,  G01S5/30 ,  H04B1/7136 ,  H04W16/14 ,  H04W64/00

CPC分类号： G01S1/0428 ,  G01R23/165 ,  G01S1/045 ,  G01S1/725 ,  G01S1/763 ,  G01S5/30 ,  H04B1/7136 ,  H04W16/14 ,  H04W64/006 ,  H04B2001/71367

摘要： A method and system for enabling the determination of a position of a receiver within a space includes transmitting a beacon signal from each of a plurality of beacon devices located at different locations within the space. The beacon signal transmitted from each beacon device has a unique information component and may have a unique frequency pattern of multiple frequencies. Each beacon signal can be distinguishable from the beacon signals transmitted from any other of the beacon devices based on the combination of its unique information component and its unique frequency pattern. The beacon signals are received at a receiver. At the receiver, for each beacon signal of a working subset, time-delay information of the received beacon signal is determined and multilateration is applied to determine the position of the receiver based on the location of each beacon device of the working subset.

公开(公告)号：US11959993B2

公开(公告)日：2024-04-16

申请号：US16495768

申请日：2018-03-19

申请人： TAKEMETUIT INC.

发明人： Nick Barker ,  Vimalkumar Bhandari ,  Christopher Henrikson

IPC分类号： G01S1/04 ,  G01R23/165 ,  G01S1/72 ,  G01S1/76 ,  G01S5/30 ,  H04B1/7136 ,  H04W16/14 ,  H04W64/00

CPC分类号： G01S1/0428 ,  G01R23/165 ,  G01S1/045 ,  G01S1/725 ,  G01S1/763 ,  G01S5/30 ,  H04B1/7136 ,  H04W16/14 ,  H04W64/006 ,  H04B2001/71367

摘要： A method and system for enabling the determination of a position of a receiver within a space includes transmitting a beacon signal from each of a plurality of beacon devices located at different locations within the space. The beacon signal transmitted from each beacon device has a unique information component and may have a unique frequency pattern of multiple frequencies. Each beacon signal can be distinguishable from the beacon signals transmitted from any other of the beacon devices based on the combination of its unique information component and its unique frequency pattern. The beacon signals are received at a receiver. At the receiver, for each beacon signal of a working subset, time-delay information of the received beacon signal is determined and multilateration is applied to determine the position of the receiver based on the location of each beacon device of the working subset.

公开(公告)号：US20150378003A1

公开(公告)日：2015-12-31

申请号：US14765378

申请日：2014-01-31

申请人： TAKEMETUIT INC.

发明人： Raymond MAYER

IPC分类号： G01S5/26

CPC分类号： G01S5/26 ,  G01S5/18 ,  H04W64/00

摘要： A method of determining of a true time of arrival of an energy pulse in a positioning system using arrivals times of such pulses at a device after emission of the pulses from respective transmitters. A sampled signal is cross-correlated with the expected form of the energy pulse from the transmitter, and a highest peak in the correlated signal is located and selected to represent a possible time of arrival of the energy pulse. A sequentially preceding peak in the correlated signal is then selected has its magnitude compared with a threshold. This step is repeated until the magnitude of the currently selected peak is less than the threshold, at which point the last-selected peak whose magnitude exceeded the threshold marks the true time of arrival. This process avoids false time of arrival readings caused by reflected pulses.

摘要翻译： 一种确定能量脉冲在定位系统中的真实到达时间的方法，在从各个发射机发射脉冲之后，在设备处的这种脉冲的到达时间。 采样信号与来自发射机的能量脉冲的预期形式相互关联，并且相关信号中的最高峰位于并选择以表示能量脉冲的可能到达时间。 然后选择相关信号中的顺序前一峰具有与阈值相比的幅度。 重复该步骤直到当前选择的峰值的幅度小于阈值，此时，其超过阈值的最后选择的峰值标记真实的到达时间。 该过程避免了由反射脉冲引起的到达读数的假时间。