Method for determining the trajectory of a ballistic missile

  • US 20110246069A1
  • Filed: 01/28/2011
  • Published: 10/06/2011
  • Est. Priority Date: 01/29/2010
  • Status: Abandoned Application
First Claim
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1. A method for determining the trajectory of a ballistic missile, comprising:

  • a step for determining, at different instants (t) when the ballistic missile is in unpropelled exoatmospheric phase, an azimuth angle (θ

    t) and an elevation angle (φ

    t) of the ballistic missile,a step for determining positions in three dimensions ((dt, θ

    t, φ

    t)) of the ballistic missile at said instants (t) from the various pairs of angles ((θ

    t, φ

    t)) and from a kinematic non-braked ballistic trajectory model, said step comprising a first substep consisting in determining the positions in three dimensions ((dt, θ

    t, φ

    t)) using a kinematic non-braked ballistic trajectory model with constant gravity, and a second substep consisting in refining the positions in three dimensions ((dt, θ

    t, φ

    t)) using a kinematic non-braked ballistic trajectory model with variable gravity according to the position of the ballistic missile relative to a terrestrial coordinate system.

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