This paper has researched on the problem of track correlation with systematic errors in radar network

analyzed that how do the general and big systematic errors affect the detected tracks of target theoretically;On the basis

prior to registration

a target track alignment-correlation algorithm based on phasecorrelation has been presented.Based on the characteristics of Radon transform and Fourier transform

the algorithm estimates the rotation and the mass motion using 1D and 2D phase correlation respectively.Thus

the target tracks provided by different radars in common coordinates could be aligned and associated accurately without estimation and registration of radar systematic errors in advanced.Finally

the Monte-Carlo simulation result illustrates that the algorithm has excellent alignment-correlation performance in different systematic error and target environments

and shows that the algorithm can provide reliable associated tracks for the later registration.