In the condition that much of clutter will be generated as the radar is disturbed by the noise jamming, how to complete the track initiation fast is a problem worthy of study. Combined with the measured data from the jamming environment,a lot of study had been done by using the logic-based initiation method and the modified logic initiation method, and some meaningful conclusions were drawn. Then the result indicated that the algorithm primely solved the problems that the method based on the three-out-of-four logic could not be used to initiate tracks normal because there were too many false targets. Furthermore, it also lowered the memory requirement and decreased the computing cost efficiently.