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Integrated Estimation Guidance and Control for Engaging Ballistic Target

Integrated Estimation Guidance and Control for Engaging Ballistic Target. P. N. Dwivedi , S.N.Tiwari , Dr. A. Bhattacharya , Scientist, DRDO, Hyderabad-,INDIA Dr. Radhakant Padhi Asst. Professor, IISC, Banglore , INDIA. Outline. OBJECTIVE OF IEGC

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Integrated Estimation Guidance and Control for Engaging Ballistic Target

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  1. Integrated Estimation Guidance and Control forEngaging Ballistic Target P. N. Dwivedi, S.N.Tiwari, Dr. A. Bhattacharya, Scientist, DRDO, Hyderabad-,INDIA Dr. RadhakantPadhi Asst. Professor, IISC, Banglore, INDIA

  2. Outline • OBJECTIVE OF IEGC • FORMULATION OF INTEGRATED ESTIMATION GUIDANCE AND CONTROL • RESULTS • CONCLUSION

  3. OBJECTIVE OF IEGC

  4. OBJECTIVE OF IEGC • In this paper a novel scheme is designed to integrate Estimation, Guidance and Outer loop of control to enhance performance of an interceptor. • This scheme is here after refereed as Integrated Estimation Guidance Control (IEGC) scheme • It uses the guidance parameters like zero effort miss(ZEM), relative velocity (∆V ), ballistic coefficient (β) and time-to-go (Tgo) in the estimator state model and utilizes the output vector of estimator as body rate command. • The benefit of this scheme is that Estimation, Guidance and Control work in unison and yields optimal result

  5. OBJECTIVE OF IEGC

  6. FORMULATION OF INTEGRATED ESTIMATION GUIDANCE AND CONTROL State Equation Measurement Equation Output Equation

  7. States Equation

  8. States Equation

  9. Measurement Equation

  10. OUTPUT EQUATION

  11. Nonlinear Controller

  12. RESULTS

  13. Monte Carlo result

  14. Result with various Engagement

  15. Result with Perturbed cases

  16. CONCLUSION • In this paper, a new Integrated Estimation, Guidance and Control algorithm is introduced for the interception of ballistic targets. • The design implicitly uses the time-to-go as well as guidance parameter like zero effort miss in the estimation process to reduce the consequences of estimation errors and delay on guidance performance. • Using the new IEGC formulation in various interception scenario demonstrated not only a substantial improvement compared with earlier result, but this scheme also possesses a potential to satisfy a hit-to-kill requirement.

  17. Thanks for the Attention….!! Questions ... ??

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