In the dense signal environment

signal deinterleaving is a tedious problem by using traditional technique.This paper presents a new method──Plane Transformation. With this technique

the interleaved pulse trains were cut into many paxts and shown line by line as a plane fipe. By changing the width of the plane

various characteristic curves

representing the signals

can be seen. They are actually the result of the accumulation of the signal’ s"modulation" substracting the corresponding average value

which can be used to deinterleave signals with less difficulty by other means.