×

Enhancement of sensors for airborne operation

  • US 20050160815A1
  • Filed: 03/12/2003
  • Published: 07/28/2005
  • Est. Priority Date: 03/18/2002
  • Status: Active Grant
First Claim
Patent Images

1. A gravity gradient instrument, comprising:

  • a first, second, third and fourth accelerometer equally spaced around the circumference of a circle, with their sensitive axes tangential to the circle, and arranged in opposing pairs with the first accelerometer opposite the second, and the third accelerometer opposite the fourth;

    in use the accelerometers are spun around an axis normal to the circle and passing through its centre;

    a summing amplifier which receives the outputs of the accelerometers and combines them in a manner to cancel the common mode output signals, to produce an instrument output; and

    one or more feedback loops extending from the instrument output to one or more of the accelerometers to compensate for errors;

    wherein the feedback loops include one or more inputs in addition to the instrument output, the additional inputs including signals representing one or more of;

    components of attitude, velocity and acceleration, the physical environment and flight conditions, taken alone or in combination.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×