Positioning System For Digital Telephone Networks

摘要

1. Tehnical Result Increase in efficiency of determining the position. 2. Essence A system effects determining the position of a mobile receivers 4. The transmitting signals from a plurality of sources 1 have a format, at least a portion of which has predetermined values or a portion of which is repeated. The time offset of the transmission signals received at each receivers 4 from a transmission source 1 relative to a reference clock of each receiver is determined by generating a reference signal locked to the reference clock. The reference signal has a similar format to the transmission signals. The time delay between the respective signals received at the receivers 4 is determined from their relative time offset, to thereby determine the position of the other receivers 4. 3. Field of Application Electric communication technique.