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CROSSCOUPLING COMPUTER

  • US 3,610,900 A
  • Filed: 11/24/1969
  • Issued: 10/05/1971
  • Est. Priority Date: 11/24/1969
  • Status: Expired due to Term
First Claim
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1. Apparatus for computing crosscoupling errors introduced into the measurement of local gravitational fields by a beam gravimeter and for eliminating these errors from the gravity measurement, comprising;

  • means for generating a signal having an amplitude proportional to accelerations to which said beam is subjected which are collinear with the longitudinal axis of said beam;

    means for multiplying said signal with a signal having an amplitude proportional to the angular orientation of said beam relative to a reference position;

    means having a transfer function corresponding to the mechanical damping function of said gravimeter for filtering the signal resulting from said multiplication; and

    means for subtracting said filtered signal from the signal generated by said gravimeter so as to produce a signal proportional only to said local gravitational field, whereby crosscoupling errors in the signal generated by said gravimeter are automatically eliminated from the gravity measurement.

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