Remote localization and radio-frequency identification using a combination of structural and antenna modes scattering responses
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04W-024/00
G01S-005/02
G01S-005/12
G01S-013/87
H04W-064/00
H04L-029/08
H04M-001/725
H04W-004/02
출원번호
US-0916378
(2018-03-09)
등록번호
US-10261168
(2019-04-16)
발명자
/ 주소
Aditya, Sundar
Behairy, Hatim M.
Molisch, Andreas F.
출원인 / 주소
KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
대리인 / 주소
Calderon, Andrew M.
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
The present disclosure generally relates to localization and, more particularly, to remote localization and radio-frequency identification using a combination of structural and antenna mode scattering responses. A method and system include receiving location data of an object from a plurality of tra
The present disclosure generally relates to localization and, more particularly, to remote localization and radio-frequency identification using a combination of structural and antenna mode scattering responses. A method and system include receiving location data of an object from a plurality of transmitter-reader pairs (TRPs); generating a plurality of first ellipses representing the received location data; determining blocking likelihoods at points of intersection between the plurality of first ellipses; generating additional ellipses representing additional location data received from additional TRPs; and updating the blocking likelihoods at points of intersection between the plurality of first ellipses and the additional ellipses.
대표청구항▼
1. A method comprising: receiving, by a computing device, location data of an object from a plurality of transmitter-reader pairs (TRPs);generating, by the computing device, a plurality of first ellipses representing the received location data;determining, by the computing device, blocking likelihoo
1. A method comprising: receiving, by a computing device, location data of an object from a plurality of transmitter-reader pairs (TRPs);generating, by the computing device, a plurality of first ellipses representing the received location data;determining, by the computing device, blocking likelihoods at points of intersection between the plurality of first ellipses;generating, by the computing device, additional ellipses representing additional location data received from additional TRPs; andupdating, by the computing device based on the additional ellipses, the blocking likelihoods at points of intersection between the plurality of first ellipses and the additional ellipses,wherein the location data and the additional location data include data from a structural mode of an antenna associated with the object. 2. The method of claim 1, wherein the points of intersection between the plurality of first ellipses and the additional ellipses represent a potential object location. 3. The method of claim 2, further comprising: comparing the blocking likelihoods to a threshold; andeliminating blocking likelihoods which exceed the threshold,wherein a surviving point of intersection represents an actual location of the object. 4. The method of claim 1, wherein the location data further includes multipath components (MPCs). 5. The method of claim 4, wherein each ellipse represents the MPCs. 6. The method of claim 1, wherein determining the blocking likelihood or updating the blocking likelihood is based on an expression of −log P(kt), in which kt represents a blocking vector. 7. The method of claim 1, wherein receiving the location data from the TRPs includes receiving a backscattered signal from the antenna. 8. The method of claim 7, wherein the backscattered signal is a superposition of the structural mode and an antenna mode of the antenna. 9. A computer program product for identifying an object location, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a computing device to cause the computing device to: select a plurality of transmitter-reader pairs (TRPs) in an environment;generate a plurality of first ellipses representing location data received from the selected TRPs;determine a blocking likelihood at points of intersection between the plurality of first ellipses;generate additional ellipses representing additional location data received from additional TRPs; andupdate, based on the additional ellipses, the blocking likelihood at the points of intersection between the plurality of first ellipses and the additional ellipses,wherein the location data and the additional location data include data from a structural mode of an antenna associated with the object. 10. The computer program product of claim 9, wherein the points of intersection between the plurality of first ellipses and the additional ellipses represent a potential object location. 11. The computer program product of claim 10, wherein the program instructions further cause the computing device to: compare the blocking likelihoods to a threshold; andeliminate the blocking likelihoods which exceed the threshold,wherein a surviving point of intersection represents an actual location of the object. 12. The computer program product of claim 9, wherein determining the blocking likelihood or updating the blocking likelihood is based on an expression of −log P(kt), in which kt represents a blocking vector. 13. The computer program product of claim 9, wherein each ellipse represents multipath components (MPCs). 14. The computer program product of claim 9, wherein receiving the location data from the TRPs includes receiving a backscattered signal from the antenna. 15. The computer program product of claim 14, wherein the backscattered signal is a superposition of the structural mode and an antenna mode of the antenna. 16. A system comprising: a CPU, a computer readable memory and a computer readable storage medium associated with a computing device;program instructions to generate a plurality of first ellipses representing multipath components (MPCs) extracted from a plurality of transmitter-reader pairs (TRPs);program instructions to determine a blocking likelihood at points of intersection between the plurality of first ellipses;program instructions to generate additional ellipses representing MPCs extracted from additional TRPs; andprogram instructions to update, based on generating the additional ellipses, the blocking likelihoods at the points of intersection between the first plurality of ellipses and the additional ellipses, wherein the MPCs include data from a structural mode of an antenna associated with an object, andthe program instructions are stored on the computer readable storage medium for execution by the CPU via the computer readable memory. 17. The system of claim 16, wherein the points of intersection between the plurality of first ellipses and the additional ellipses represent a potential object location. 18. The system of claim 16, further comprising: program instructions to compare the blocking likelihoods to a threshold; andprogram instructions to eliminate the blocking likelihoods which exceed the threshold,wherein a surviving point of intersection represents an actual location of the object. 19. The system of claim 16, wherein determining the blocking likelihood or updating the blocking likelihood is based on an expression of −log P(kt) in which kt represents a blocking vector. 20. The system of claim 16, wherein the MPCs are from a backscattered signal generated by the antenna which is a superposition of the structural mode and an antenna mode of the antenna.
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이 특허에 인용된 특허 (7)
Wild, Ben J.; Madhow, Upamanyu; Ramchandran, Kannan; Barton, Robert; Tkachenko, Artem, Applique nodes for performance and functionality enhancement in radio frequency identification systems.
Ramchandran, Kannan; Wild, Ben J.; Tkachenco, Artem; Madhow, Upamanyu, Localization using virtual antenna arrays in modulated backscatter RFID systems.
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