| 摘要 |
<p>Validating identification clusters (22) are formed of unique transmitter intercepts (20, 21) and validating clusters based on information within the cluster data with or without the aid of specific intercepts. Transmitter validation signals are allocated for validating specific ones of the transmitters to form an identification signal. Storage (17) is provided for storing the specific received intercepts with corresponding identification cluster as validated or invalidated. The valid and invalid states of the stored clusters are used to authorized or prevent access by transmitters to the communication system.</p> |
