GPS Synchronous Clock Solution for Data Acquisition in Tests
LV Qi-yuan · Journal of Gun Launch & Control · 2007
Data acquisition equipments of weapon system and true value measuring equipments of the base would perform data synchronous acquisition work according to relevant test methods.Based on real time clock of GPS system,and by means of absolute time-marker,real time data acquisition between different sites was performed in the form of wireless.By means of setting up a real time clock with high resolution in the computer of data acquisition,and using real time operational system in place of traditional synchronous control device,timing information with high accuracy was added into acquisition data.The principle of GPS synchronous time-marker technology is to carry out timing calibration of synchronous control system,to record standard time of external events of data acquisition computer by means of GPS second pulse and absolute time-markers,so as to assure time accuracy of synchronous control system.Tests showed that the solution has high effectiveness-cost,flexible performances,and wide application value.