Titre du document / Document title
Comparison of the Radar and Seeker Modes of Pursuer Guidance
Auteur(s) / Author(s)
SARKAR A. K. (1) ;
ANANTHASAYANAM M. R. (2) ;
SRINIVASAN T. (1) ;
KAR P. K. (1) ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) Defence Research and Development Laboratory, Hyderabad 500 058, INDE
(2) Indian Institute of Science, Bangalore 560 012, INDE
Résumé / Abstract
This paper compares closed-loop performance of seeker-based and radar-based estimators for surface-to-air interception through 6-degree-of-freedom simulation using proportional navigation guidance. Ground radar measurements are evader range, azimuth and elevation angles contaminated by Gaussian noise. Onboard seeker measurements are pursuer-evader relative range, range rate also contaminated by Gaussian noise. The gimbal angles and line-of-sight rates in the gimbal frame, contaminated by time-correlated non-Gaussian noise with realistic numerical values are also available as measurements. In both the applications, extended Kalman filter with Gaussian noise assumption are used for state estimation. For a typical engagement, it is found that, based on Monte Carlo studies, seeker estimator outperforms radar estimator in terms of autopilot demand and reduces the miss distance. Thus, a seeker estimator with white Gaussian assumption is found to be adequate to handle the measurements even in the presence of non-Gaussian correlated noise. This paper uses realistic numerical values of all noise parameters.
Revue / Journal Title
Journal of guidance, control, and dynamics
ISSN
0731-5090
CODEN JGCODS
Source / Source
2009, vol. 32, n
o6, pp. 1912-1920 [9 page(s) (article)] (17 ref.)
Langue / Language
Anglais
Editeur / Publisher
American Institute of Aeronautics and Astronautics, Reston, VA, ETATS-UNIS
(1982)
(Revue)
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Localisation / Location
INIST-CNRS, Cote INIST : 19058, 35400017160129.0170
Nº notice refdoc (ud4) : 22136859
