| 摘要 |
<p>A system for determining a spatial position of a receiving device within a monitoring region includes a transmitting unit for emitting wireless signals for the receiving device to receive. The transmitting unit includes one or more transmitters switched via a switching arrangement to a plurality of transmitting antennae (aerials) which emit the wireless signals. The plurality of transmitting antennae are arranged to have mutual diversity (spatial, angular/directional, polarisation, and frequency diversity are mentioned) in their emission characteristics that influence reception of the wireless signals at the receiving device so as to overcome fading and signal occlusion / obstruction in an indoor environment. The receiving device includes computing hardware for processing the wireless signals received at the receiving device to determine RSSI (received signal strength) which may be compared to expected values to determine position. Super-sampling is possible.</p> |
