| 摘要 |
A heading-attitude reference apparatus having an attitude gyro (10) arranged on an inner frame (32) is intended to be pre-aligned to the north using the spin axis of the attitude gyro (10). Fine alignment can then take place using a modified gyrocompassing method. For this purpose, an actuating signal Uy<c>, which is passed from an alignment regulator (110) to a torque generator of the attitude gyro (10), which torque generator acts about a vertical axis (y), in the balance state, as a function of the signal of an attitude sensor (42), is picked off in the case of two angular positions which are offset with respect to one another through a fixed angle ( delta ), and is supplied to a computer. The computer uses this information to determine the angle between the spin axis and north. The azimuth frame (36) and the inner frame (32) with the attitude gyro (10) are rotated through this angle. <IMAGE>
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