Patent ID: 7065891

Claim:
A compass device comprising: a platform defining an xz-plane and an x-axis; a first accelerometer coupled to said platform at an angle such that said first accelerometer is sensitive to movement of said first accelerometer in said xz-plane, said first accelerometer comprising a first flexure plate generating a first accelerometer signal in response to movement of said first flexure plate; a second accelerometer coupled to said platform at an angle such that said second accelerometer is sensitive to movement of said second accelerometer within said xz-plane, said second accelerometer comprising a second flexure plate generating a second accelerometer signal in response to movement of said second flexure plate; and a processor receiving said first accelerometer signal and said second accelerometer signal, said processor generating a platform control signal thereby rotating said platform in response to an inequality between said first accelerometer signal and said second accelerometer signal as referenced to a co-mounted gyrocompass.