MR01a-21 Indoor RF Imaging

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SHEN, Shanpu(@eeshanpu)
January 19, 2022 3:26 pm

Your project is interesting! What is the difference between your imaging technique with the synthetic aperture radar?
Another comment for your poster: your font is too small to read.

MA, Chit Ming(@cmmaab)
January 19, 2022 3:45 pm
Reply to  SHEN, Shanpu

RTI can only be used in a limited area unlike the synthetic aperture radar can scan a large area.

CHAN, Man Tik(@mtchanad)
January 19, 2022 3:46 pm
Reply to  SHEN, Shanpu

Synthetic aperture radar needs to record the amount of energy reflected back, RTI is not. The original RTI technology requires plenty number of transceivers to collect data, it is not efficient in searching large areas. The imaging is based on wifi attenuation.

CAO, Xuanyu(@eexcao)
January 19, 2022 2:49 pm

What image reconstruction algorithm did you use?

MA, Chit Ming(@cmmaab)
January 19, 2022 2:56 pm
Reply to  CAO, Xuanyu

We are using a weighted matrix W [# of links by # of pixels] and computed with Wi-Fi received signal strengths y, then we can get a square matrix x, which is our output.

ZHANG, Jun(@eejzhang)
January 19, 2022 2:44 pm

This is an interesting project. Can you tell me something about the motivation to carry out this project? Are you coming up with the topic by yourselves? Also, what is the major technical difficulty you have encountered so far?

MA, Chit Ming(@cmmaab)
January 19, 2022 2:51 pm
Reply to  ZHANG, Jun

We also think this RTI technology is interesting, and instead of using numbers of transceivers as steady nodes, we may use 2 robotic cars to collect the data, then we can reduce the cost for RTI. This project is suggested by Professor Murch, it isn’t coming up with ourselves.

NGAN, Man Hoi(@mhnganaa)
January 19, 2022 3:01 pm
Reply to  ZHANG, Jun

Thank you for your question! To integrate the measured results are most difficult so for, we have to integrate the results of 120 unique 2-ways link clearly for the imaging reconstruct. Also, we proposed an efficient measurement process to exchange the function as station and movement for the two robots cars, which can reduce the measurement time and get the measurement data sequentially.

LI, Chun Ming(@cmliag)
January 19, 2022 2:33 pm

Wow! This project really got me interested! The system design is well structured and is visualized clearly and precisely in the logic flow diagram. Hope to see the prototype in person soon~

MA, Chit Ming(@cmmaab)
January 19, 2022 2:34 pm
Reply to  LI, Chun Ming

Thank you, Gordon~

Last edited 10 months ago by MA, Chit Ming