Radio Frequency Sensing for Imaging - UCSB Delgado... · Radio Frequency Sensing for Imaging Daryl...
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Transcript of Radio Frequency Sensing for Imaging - UCSB Delgado... · Radio Frequency Sensing for Imaging Daryl...
Radio Frequency Sensing for ImagingDaryl Delgado
Electrical Engineering major, Santa Barbara City College
Lab director:
Dr. Yasamin Mostofi
Professor, UCSB
Mentor:
Belal Korany
Potential benefits include:
❖ Disaster Management
❖ Search and Rescue
❖ Surveillance
❖ Building Energy Efficiency
S. Depatla, L. Buckland, and Y. Mostofi, "X-Ray Vision with Only WiFi Power Measurements
Using Rytov Wave Models," IEEE Transactions on Vehicular Technology, special issue on Indoor
Localization, Tracking, and Mapping, volume 64, issue 4, pp. 1376-1387, April 2015
Illustrative figure
Previous lab work
Area of Interest
Ground Truth Image
Reconstructed 3D Image
C.R. Karanam and Y. Mostofi, "3D Through-Wall Imaging with Unmanned Aerial Vehicles Using WiFi," in the proceedings of the 16th ACM/IEEE International Conference
on Information Processing in Sensor Networks (IPSN), April 2017.
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Area of Interest
Forward Problem
Reverse Problem
Problem Solving Process
Transmitter (Tx)
Receiver (Rx)
Pixel
Forward Problem
d = distance
λ = wavelengthGreen’s Function
5X5 = 25 Pixels
In this problem, we are interested in calculating the received (Rx) signal at multiple receivers
from a known source.
Transmitter (Tx)
Receiver (Rx)
Pixel
Forward Problem
d = distance
λ = wavelengthGreen’s Function
= Total received signal
7 Receivers
In this problem, we are interested in calculating the received (Rx) signal at multiple receivers
from a known source.
200 X 200 Pixels
Off
On
Pixel
Receiver
Receiver
Effect of Position
Ma
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itu
de
Ph
ase
Degrees
Degrees
90
180 0
270
Receiver
Effect of Position
Forward Problem
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ase
Degrees
Degrees
Effect of Position
Receiver
Forward Problem
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ase
Degrees
Degrees
Receiver
Effect of Position
Forward Problem
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Degrees
Receiver
Effect of Position
Forward Problem
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Degrees
Receiver
Effect of Position
Forward Problem
Ma
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ase
Degrees
Degrees
Receiver
Effect of Shape
Forward Problem
Ma
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Ph
ase
Degrees
Degrees
Receiver
Effect of Shape
Forward Problem
Ma
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Ph
ase
Degrees
Degrees
Receiver
Effect of Shape
Forward Problem
Ma
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Degrees
Degrees
Receiver
Effect of Shape
Forward Problem
Ma
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Degrees
Degrees
❖ Gained basic knowledge of wireless signals, systems and RF
sensing.
❖ Completed code solving forward problem.
❖ Rx signals change by changing the transmitter parameters (position,
shape, size, …) which means information about the environment is
present in the Rx signal.
Conclusions
❖ Modify the forward code to make Rx signal more accurate.
❖ Gain more knowledge about wireless communication systems.
Future Goals
Acknowledgements
Professor Dr. Yasamin Mostofi
Lab Mentor Belal Korany
AIM Program Advisor Wendy Ibsen
AIM Program Advisor Jens-Uwe Kuhn
