The uniform polar angle is to be used along with “Uniform polar distance”, this function is designed to describe a uniform distribution of transmitters within a circular area centred around a given zero-point. But whereas “Uniform polar distance” describes random distance to centre point, the “Uniform polar angle” function defines random angle (azimuth) of transmitter with regards to centre point.
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This distribution is similar to uniform distribution but in the angle domain.
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Figure 405407: Uniform polar angle distribution: parameters (left) PDF (right)