Wireless geolocation method

A method of locating a user device relative to a known datum comprises: whilst angularly steering, electronically, in a first plane a first antenna lobe, measuring at least two radio parameters of a signal emanating from a user device corresponding to at least two different steering angles. Simultaneously or soon thereafter, a second antenna lobe is electronically steered in a second plane, yielding two further radio parameters of the user device corresponding to at least two different further steering angles. A first portion of a coverage area in a first direction is selected based upon the first at least two measured parameters and a second portion of a coverage area in a second direction is selected based upon the further at least two measured parameters, the second direction being substantially orthogonal to the first. The location of the user device is reported to a further process or system, based upon the first and second portions.