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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2017, Vol. 38 ›› Issue (5): 320668-320668.doi: 10.7527/S1000-6893.2016.0287

• Material Engineering and Mechanical Manufacturing • Previous Articles     Next Articles

Track alignment-association of radar and ESM in MPC

GUAN Xin, PENG Binbin, YI Xiao   

  1. Department of Electronics and Information Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, China
  • Received:2016-08-08 Revised:2016-11-04 Online:2017-05-15 Published:2016-11-09
  • Supported by:

    National Natural Science Foundation of China (61032001);Program for New Century Excellent Talents in University of Ministry of Education of China (NCET-11-0872)

Abstract:

This paper conducts research on the problem of track association of radar and electronic support measurements (ESM) with systematic errors existing in modified polar coordinates (MPC). Systematic errors can cause a mass motion of bearing estimates of radar and ESM in MPC, but only slight influence on the estimate of bearing rate and inverse-time-to-go (ITG). By referring to knowledge of non-central chi-squared distribution, the effect of measurement errors of radar and ESM on non-central parameters and probability of correct association are analyzed. A track alignment-association algorithm for radar and ESM based on overlap ratio of integral is proposed. The tracks of radar and ESM are mapped into the bearing-bearing rate space to gain the curves of radar and ESM. Then, the overlap ratio of integral of the target curves is calculated, and the mass of bearing systematic errors of radar and ESM is estimated. The track association is achieved after the mass is compensated. Simulation results show that probability of correct association can be improved effectively by the proposed algorithm in the presence of systematic errors.

Key words: systematic error, track association, radar, electronic support measurements, non-central parameter, overlap ratio of integral, modified polar coordinates

CLC Number: