Antarctic_ice_shelf_3D_cross_sectional_profile_imaging_using_MIMO_radar.ppt

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Technologie

Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction – Motivation ,[object Object],[object Object],[object Object]

Introduction – Current & Alternative Methods ,[object Object],[object Object]

[object Object],[object Object],[object Object],Introduction – Phased Array vs. MIMO

Research Aim ,[object Object],[object Object],[object Object]

Trial Radar System ,[object Object],[object Object],Operating frequency 305 MHz Bandwidth 160 MHz Frequency steps 5001 Total transmit time 250 s Range/Depth resolution 0.937 m

Trial Radar System – Revised specifications ,[object Object],P. Kanagaratnam, S.P Gogineni, N. Gundestrup, and L. Larsen, “High-resolution radar mapping of internal layers at the North Greenland Ice core Project,” Journal of Geophysical Research, vol. 106, no. D24, pp. 799 –811, Dec. 2001 . [1] Wavelength in ice, λ 0.5324 m with ε r =3.1 [1] Revised depth resolution 0.532 m Maximum depth 2.6 km

MIMO Antenna - configuration ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],MIMO Antenna - beampattern

Signal Processing ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object]

2D Digital Beamforming ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],I/Q mixer imbalance correction

Trial Results ,[object Object],[object Object]

Observations ,[object Object],[object Object]

Conclusions ,[object Object],[object Object],[object Object],[object Object]

Further work ,[object Object],[object Object]

Acknowledgement Field data for analysis provided by British Antarctic Survey Arvind Hari Narayanan [email_address]

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Antarctic_ice_shelf_3D_cross_sectional_profile_imaging_using_MIMO_radar.ppt

1. Antarctic Ice Shelf 3D Cross-sectional Imaging using MIMO Radar A. Hari Narayanan UCL Electronic and Electrical Engineering, UK P. Brennan UCL Electronic and Electrical Engineering, UK R. Benjamin UCL Electronic and Electrical Engineering, UK F. Gillet-Chaulet Laboratoire de Glaciologie et Géophysique de l’Environment, France K.W. Nicholls British Antarctic Survey, UK IGARSS 2011

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15. I/Q mixer imbalance correction – T1 R6

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17.

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19.

20. Acknowledgement Field data for analysis provided by British Antarctic Survey Arvind Hari Narayanan [email_address]

21. Appendix - 2D Array Geometry