| CPC H04W 64/00 (2013.01) [H04B 17/318 (2015.01)] | 8 Claims |
|
1. A method of locating a target device, the target device emitting a wireless signal having a signal strength detectable within a search area, the method comprising:
A: Defining a distribution for the signal strength within the search area, the distribution being a Gaussian distribution and having an initial condition governed by prior knowledge of the search area, the signal strength of any location in the search area being assumed to follow the Gaussian distribution;
B: Interrogating the distribution to determine a plurality of inquiry locations in the search area, wherein each inquiry location is outside a neighbourhood space of any other inquiry location, the neighbourhood space being defined as a circular region centered at an inquiry location of the inquiry locations;
C: Determining a plurality of signal strengths at the inquiry locations based on a Bayesian optimisation algorithm which calculates a relationship between a location and a signal strength, the signal strengths corresponding to strengths of wireless signals emitted from the target device; and
D: Updating the distribution based on the determined signal strengths;
such that:
the steps B through D are iterated until a convergence condition is reached, wherein the convergence condition includes a proximity of inquiry locations within a predetermined threshold.
|