How can tomographic image resolution be obtained using wifi sensing and imaging?

  • #1
tomography
1
0
TL;DR Summary
tomographic image resolutions from wifi sensing
hello i would like to ask how to obtain tomographic image resolutions from wifi sensing and imaging using signals processing. thanks very much.
 
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  • #2
Welcome to PF.

If you have one wifi transmitter and multiple receiver antennas, then the image resolution will be a function of the spacing of the furthest apart antennas. Where λ is the aperture of the antenna array in wavelengths. The angular resolution in degrees will be approximately;
Resolution = 57° / λ;
That can be applied in the horizontal and vertical dimensions.
The antenna array will need several elements, variously spaced between the end elements, to resolve the lower spatial frequencies in the image.
 
  • #4
2.4 GHz is 12 cm. Seeing below that poses a fundamental challenge. 5 GHz is twice as good.
 

1. How does wifi sensing and imaging work?

Wifi sensing and imaging involves using wifi signals to create images of objects or environments. This is achieved by analyzing the changes in wifi signals as they bounce off objects and using advanced algorithms to reconstruct the images.

2. What is the resolution of tomographic images obtained through wifi sensing and imaging?

The resolution of tomographic images obtained through wifi sensing and imaging can vary depending on the specific setup and algorithms used. However, it is generally lower than traditional imaging techniques such as MRI or CT scans.

3. How can the resolution of tomographic images be improved using wifi sensing and imaging?

There are several ways to improve the resolution of tomographic images obtained through wifi sensing and imaging. These include using multiple antennas, optimizing the placement of antennas, and using advanced algorithms to enhance the image quality.

4. What are the limitations of using wifi sensing and imaging for tomographic images?

One of the main limitations of wifi sensing and imaging is its lower resolution compared to traditional imaging techniques. Additionally, the accuracy of the images can be affected by environmental factors such as interference and signal attenuation.

5. What are the potential applications of wifi sensing and imaging for tomographic images?

Wifi sensing and imaging has the potential to be used in various applications, such as healthcare, security, and environmental monitoring. It can also be used for non-invasive imaging in areas where traditional techniques may not be feasible or safe.

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