GPS AIDED OPEN LOOP COHERENT TIMING

摘要

GPS aided precision timing uses GPS to generate synchronized timing pulses by various nodes. One of the nodes is designated as a master node and the remaining nodes are designated as auxiliary nodes. Each node tracks the carrier phases of satellite signals transmitted by a plurality of GPS satellites relative to a carrier phase of a reference oscillator in the respective node. The master node provides the tracked phase measurements along with its position information to all of the auxiliary nodes. Each auxiliary node determines the phase offset of its reference oscillator relative to the reference oscillator of the master node to “align” its phase to the phase of the master node. The phase of a time pulse signal generator in each node is then aligned to the phase of its reference oscillator for generating synchronized timing pulses based on the aligned phases.