Patent ID: 6853315

Claim:
A gyroscopic navigation system, comprising: a first sensor module, having a plurality of electrical rotational rate sensors, for providing a plurality of rotational rate signals; a second sensor module, having a plurality of electrical compensation sensors, for providing a plurality of compensation signals; a microcontroller module, coupled to the first and second sensor modules, for processing the rotational rate signals and the compensation signals and generating attitude information, directional information, and turn coordinate information; a display, coupled to the microcontroller module, for displaying the attitude information, the directional information, and the turn coordinate information simultaneously; wherein the rotational rate sensors are made of piezoelectric elements, the piezoelectric elements are made from a single sheet of piezoelectric material; wherein one of the rotational sensors is a directional gyro, and another rotational sensor is an attitude gyro; wherein each of the directional and the attitude gyros is a three-dimensional solid-state gyro which comprises: a substrate having a proof-mass; a membrane, the proof-mass being suspended on the membrane; a single common electrode layer being disposed on the membrane; the single sheet of piezoelectric material being disposed on the single common electrode layer; and a plurality of electrodes being disposed on the single sheet of piezoelectric material in a thin-film format, the rotational rate signals being outputted through the electrodes, wherein each of the electrodes, the piezoelectric material, and the single common electrode layer form a plurality of piezoelectric elements; and wherein the compensation sensors provide acceleration, magnetic field, and temperature compensation signals to reduce correlated noise caused by acceleration, magnetic field, and temperature.