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Design of Trajectory and Guidance Algorithm of a Ground-Based System Against Exoatmospheric Targets

Moosavi Nejad, Hassan | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41923 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Nobahari, Hadi
  7. Abstract:
  8. In this thesis a hybrid guidance law has been designed for a ground-based system to intercept an exoatmospheric target. In this regard a three stage interceptor with a kinetic kill vehicle has been proposed, the design parameters of which are determined according to a conceptual design procedure. The guidance law consists three phases namely boost, midcourse and terminal phases. In boost phase, a ballistic guidance law steers the first and the second stages of the interceptor ahead of the predeicted intercept point. In the midcourse phase, the third stage of the interceptor corrects the engagement plane while it also provides the head on interception condition for the kinetic kill vehicle. In the terminal phase the seeker detects the targets and the kinetic kill vehicle guides the interceptor toward the target using a pulsed guidance law. In order to evaluate the proposed hybrid guidance law the error analysis, sensitivity analysis and Monte Carlo simulations have been performed. The results show the good performance of the proposed guidance law to intercept an exoatmospheric target, in the presence of uncertainty and disturbances. At the end, a statistical simulation toolbox, developed by the author in MATLAB/Simulink environment, is introduced. This toolbox is used in order to perform the statistical analysis
  9. Keywords:
  10. Combined Guidance ; Exoatmospheric Targets ; Lambert Guidance ; Pulsed Guidance ; Generalized Vetor Explicit Guidance ; Kinetic Kill Vehicle ; Hit to Kill

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