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Abstract

A method for association of anonymous reflectors (R.sub.1 -R.sub.11) to detected angle positions, whereby a) the anonymous reflectors are arranged in positions in a transport area; b) positions of the reflectors (R1-R11) are stored in first memory means (20); c) a beam (B) is emitted from an emission source (13) of a vehicle (10) over a search sector; d) reflected signals from reflecting objects are received on board the vehicle (10); e) an angle position towards reflecting objects in relation to a reference direction (D) of the vehicle (10) is continuously detected by detector means (18) during the sweep of the beam over the search sector, and corresponding angle values are determined; f) at least one angle value determined over the search sector is stored in a second memory means (21). The distances between reflectors (R.sub.1 -R.sub.11) are a reference point on the vehicle (10) is determined continuously by a control means (19). A relation between the distance values and the corresponding distances between stored reflector positions and a position assumed for the vehicle is determined by control means (19), the association being allowed if the relation is within an expected interval.

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First Claim