An additional goal of the Trust Zone testing program is to further understand this question. As a radio based system, the performance of the network is impacted by a number of factors such as signal obstruction from buildings. Each Trust Zone will have its own limits on distance and size and will need to take this into consideration. The optimal zone configuration for each Trust zone will take some trial and error.
While the radio’s used in each Zone Anchor can transmit up to multiple miles, within FOAM the localization performance is directly correlated to how consistently each of the four or more nodes receive each others radio packets. The further away Zone Anchors are from each other the higher the chance there will be packet loss, degrading performance of localization. Participants will contribute in determining a system wide maximum zone as a best practice.
The Current FOAM test Zone in the Brooklyn Navy Yard has a maximum distance of 1 kilometer between Zone Anchors, in a dense industrial environment, as a starting baseline data point. When building a Zone tests are required before committing to the selected locations. One of the first steps is to run a visibility and packet align test across the Zone Anchors to assess the location's viability. Partner participants will work with the Foamspace team on assessing the results of these tests before approving a permanent installation of the Zone.