1
general::
Anticipating and prepared for what will happen, as in We have to keep one jump ahead of the opposition, or A clever embezzler, Charles was just one jump ahead of the police. [First half of 1900s] Also see GET THE JUMP ON.
American Heritage Idioms
2
general::
Phrase(s): one jump ahead (of someone or something) [and] one move ahead (of someone or something)
Fig. one step in advance of someone or something. • Try to stay one jump ahead of the competition. • If you’re one move ahead, you’re well prepared to deal with problems. Then, nothing is a surprise.
McGrawhill's American Idioms And Phrasal Verbs