Gyroscopic artificial horizon

Gyroscopic instruments

Gyroscopic method and apparatus for determining magnetic heading

Gyroscopic system and method of determining direction

Heading indicator

High resolution gyro system for precise angular measurement

Identifying a directional reference using rate gyros...

Inertial sensor unit

Instrument for the automatic determination of North direction

Long-term navigation method and device

Manually manipulatable gyroscope-stabilized indicating apparatus

Method and apparatus for profiling terrain

Method and apparatus for reducing measurement errors in a naviga

Method and device for determining a true meridian

Method and system for heading indication with drift...

Method for aligning a two-axis platform

Method for eliminating gyro errors

Method of determining the direction of north

Method of improving the north seeking result

Methods and systems utilizing intermediate frequencies to...