3 How Tagoram works? Overview the basic idea
How Tagoram works? Overview the basic idea
Backscatter Communication 2 Double distance 3 Continuous wave d 0TAG Tag Reader Antenna Backscatter wave Battery free 0=( ×2d+0r+0r+0rAG)mod2π 4 Device
Backscatter Communication ❷ Double distance ❶ ������� ���� ❸ Continuous wave ❹ Device diversity
COTS RFID Reader 0,0015 radians (4096bits) ≈0.038mm accuracy Impinj Reader
COTS RFID Reader 0.0015 radians (4096 bits) ≈ �. ����� accuracy ������ ������
Problem definition MXN {(01,1t1,1),(01,2,t12)…,(01,w,t1,N)} 》》 (02,1t2,1),(02,2,t2,2)…,(02,N,t2N)} {(OM,1,tM,1),(0M,2,tM,2)…,(OM,N,tM,N)} Surveillance region Reader antenna Utilizing antennas'locations,sampled phase values and timestamps to find out the tag's trajectory f(t)?
Problem definition Surveillance region Reader antenna { �8,8,�8,8 , (�8,<,�8,<) ⋯ , (�8,?,�8,?)} { �<,8,�<,8 , (�<,<,�<,<) ⋯ , (�<,?,�<,?)} { �A,8,�A,8 , (�A,<,�A,<) ⋯ , (�A,?,�A,?)} ⋮ ⋮ ⋮ �×� Utilizing antennas’ locations, sampled phase values and timestamps to find out the tag’s trajectory �(�)?
Virtual Antenna Matrix Inverse Synthetic Aperture Radar A1A1,1A1,2A1,3A1,4 4 Conveyor V然 888888义 f(to) Initial position A2 A2,1A2,2 A2,3A2,4
Virtual Antenna Matrix Conveyor Inverse Synthetic Aperture Radar � �(��) �8 �< �8,8 �8,< �8,H �8,I �<,8 �<,< �<,H �<,I Initial position