| Abstract: | In this paper, an attempt at applying the cross range one dimensional ISAR
processing for identifying the number of aircraft in formation flight is described. The procedure
will succeed only if the translational motion of the target is compensated perfectly. The two
dimensional ISAR motion compensation methods based on high resolution range profile, such
as the scatter point referencing and the track the target centroid, can not be used here. The
track fitting method, which can be used for one dimensional ISAR motion compensation, relies
on a parametric model and suffers from a serious defect of large amount of computation. The
authors proposed an iterative dominant scatterer method for one dimensional ISAR motion
compensation. It is robust and nonparametric with low computational complexity. Live echo
signals from two fighter planes in formation flight have been collected using an S band
surveillance radar. The cross range one dimensional ISAR processing was done.
Experimental results show that identifying the number of aircraft in formation flight via cross
range one dimensional ISAR processing is feasible. |
