There are a few different synonyms that can be used to describe the concept of automatic tracking. One possible term is "automated monitoring," which conveys the idea of a system or technology that is continuously collecting and analyzing data without human intervention. Another possible phrase is "real-time tracking," which emphasizes the immediacy of the information being gathered and the ability to respond quickly to changing circumstances. "Non-manual tracking" is another possible term, which emphasizes that the tracking is being done without human input, although this phrase is less commonly used. Finally, "unmanned tracking" is a possible term that emphasizes the lack of human involvement in the tracking process.