Abstract: The dynamic initial signal is an important basis for improving the efficiency of matching between fuze and warhead and the ability of antijamming of the fuze . In general ,this signal is related not only to the target characteristics and the detecting characteristics of the fuze , but also to the conditions of encounter of the fuze and target and thier flying gesture . This paper provides an analysis on the relation between the time characteristics and space characteristics of the signal , and proves the principle of acquisition of such dynamic initial signals by means of static detection . An example of sucessful application of the theory in the development of capacity fuze is given .