North-seeking vehicle navigation course reference device - has two-axis gyroscope with azimuth frame rotation motor

摘要

A course reference device for navigation of a vehicle has a North-seeking facility involving an initial North alignment and a subsequent continuously computed course angle produced during course reference operation. It is sufficiently economical to be applicable over a wide range of uses, including in battle tanks. A two axis gyroscope has its vector axis perpendicular to the azimuth axis (10) of an azimuth frame (12). The first gyroscope input axis is parallel to the azimuth axis. The second (XK) is perpendicular to the vector and first input axis. The frame is rotated by a position motor (28). An angular position sensor operates about the azimuth axis. The tapping (16) on the first input axis (YK) is connected to the motor (28). An earth rotation vertical component original is fed to a torquer (22) on the second input axis (XK). The course signal comes from the azimuth transducer (30).