The track correlation of active radar and ESM is typical heterogeneous sensors track correlation.The traditional correlation

which uses the azimuth as the basis of correlation

cannot satisfy the demands.To solve this problem

a new correlation algorithm is proposed

which uses more information

including attribute parameters besides the azimuth.Based on the algorithm

independent three threshold are used in correlation adjudgement.The simulation result shows that the three threshold method has less number of calculation and lower leak probability and false probability.