This simulation shows an example of 3D radio tomographic imaging (RTI) along a road, using a triangularly-spaced array of received signal strength (RSS) based nodes on each side of the road. The obstruction is a 3 meter sphere moving at 11 MPH, and the node spacing is roughly 10 meters.
Coverage is very uniform with a triangular grid. However, a sawtooth grid is comparable on average, with some better areas and some worse areas.
References:
[1] J. Wilson and N. Patwari, "Radio Tomographic Imaging with Wireless Networks," IEEE Transactions on Mobile Computing, vol. 9, no. 5, pp. 621--632, May 2010.
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