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We know that digital information travels in fiber at a speed of 0.6 times the speed of light in vacuum. Thus we can say that 1ms of RTT can equal roughly 100Km distance. But in order to tackle the additive distortions in RTT values due to the various delaying factors mentioned above, use of this 100Km/ms alpha value results in a large over estimation. As a result many geolocation location techniques, such as Octant or , Constraint Based Geolocation, Topology Based Geolocation use much smaller values of 40-60 Km/ms for alpha.
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