Rotation based alignment of a group of wireless tags

A method for determining a location of a wireless tag, the method comprising:

• generating or receiving, by a tagged mobile device, estimated locations of a plurality of other tags that communicate with the tagged mobile device;
• receiving or generating, by the tagged mobile device, multiple distance measurements that are obtained during different points of time;
• wherein the multiple distance measurements are obtained during a rotational movement of the tagged mobile device;
• wherein the multiple distance measurements comprise a first set of distance measurements that represent distances between the tagged mobile device and a first tag of the plurality of other tags;
• finding, a first angle of rotation of the mobile device that corresponds to a minimal distance measurement of the first set of multiple distance measurements;
• and
• amending the estimated location of the plurality of other tags based upon the first angle of rotation.

A non-transitory computer readable medium that stores instructions that when executed by a computer cause the computer to execute the stages of:

• generating or receiving, by a tagged mobile device, an estimated location of another tag that communicates with the tagged mobile device;
• receiving or generating, by the tagged mobile device, multiple distance measurements that are obtained during different points of time;
• wherein the multiple distance measurements are obtained during a rotational movement of the tagged mobile device and represent distances between the tagged mobile device and the other tag;
• finding a certain angle of rotation of the mobile device that corresponds to a minimal distance measurement of the multiple distance measurements;
• and
• amending the estimated location of the other tag based upon the certain angle of rotation.

A tagged mobile device that comprises a wireless tag, a processor, and a display;

• wherein the tagged mobile device is configured to generate or receive, (a) an estimated location of another tag that communicates with the tagged mobile device, and (b) multiple distance measurements that are obtained during different points of time;
• wherein the multiple distance measurements are obtained during a rotational movement of the tagged mobile device and represent distances between the tagged mobile device and the other tag;
• wherein the processor is configured to find a certain angle of rotation of the mobile device that corresponds to a minimal distance measurement of the multiple distance measurements and to amend the estimated location of the other tag based upon the certain angle of rotation to provide an amended estimated location;
• wherein the display is responsive to display an indication of the amended estimation location of the other wireless tag.