== SBR Analysis of the Manhattan Scene with a Vertical Dipole Transmitter ==
The operating frequency of the SBR simulation is set to f = 2.4GHz. At this frequency, the free-space wavelength is λ<sub>0</sub> = 0.125m. Due to the very large size of the propagation scene, we choose a ray angular resolution of 0.1° for this simulation. [[EM.Terrano]] uses a special algorithm based on the tessellation of an icosahedron to generate ray tubes with uniform and equal cross sectional areas. With the specified 0.1° angular resolution, this algorithm generate generates a total of 648,000 initial rays emanating from the location of the transmitter in all directions. The reflected rays are limited to a maximum of 10 bounces. The sensitivity of the receivers is set to -100dBm. This means that if the power of any ray falls below this threshold before reaching a receiver, that ray is terminated in the scene. The figure below shows the computed receiver power coverage map of the propagation scene.
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