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Method of synchronizing navigation measurement data with S.A.R radar data, and device for executing this method

  • US 6,005,509 A
  • Filed: 07/10/1998
  • Issued: 12/21/1999
  • Est. Priority Date: 07/15/1997
  • Status: Expired due to Fees
First Claim
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1. A method of correcting imaging signals generated from a wave unit mounted on a moving platform, whereinthe platform includes a navigational system outputting a navigational deviation signal Δ

  • rNAV (t) indicative of deviations from a smooth platform motion;

    the wave unit outputs a wave deviation signal Δ

    rRDM (t) indicative of the deviations from the smooth platform motion;

    the method comprising;

    deviation cross-correlating the navigational deviation signal Δ

    rNAV (t) and the wave deviation signal Δ

    rRDM (t) to obtain a cross-correlation result K(t);

    determining a maximum of the resulting cross-correlation result K(t) as a function of time;

    setting the cross-correlation result K(t) equal to a time offset Δ

    t; and

    delaying the wave data by the time offset Δ

    t prior to any image generation.

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