METHOD AND DEVICE FOR THE RAPID DETERMINATION OF AZIMUTH ANGLE USING A GYROSCOPE

摘要

1. Method for the determination of azimuth angle using a gyroscope (4) suitable for strap-down application, in which, in a computer-controlled and automatic manner, by means of a first measurement, the azimuth angle PSI between a gyroscope measurement axis and North is determined in an initial position, in a second measurement in a position rotated by 180 degrees around the axis of rotation of the gyroscope or spin axis, the azimuth angle PSI + 180 degrees between the gyroscope measurement axis and North is determined and a third measurement is carried out in the initial position corresponding to the first measurement, and subsequently, assuming and specifying a variation of the gyroscope measurement signals which is exponential with time, a weighted mean is formed between the measured values of the first and third measurements in a signal recording and processing unit in such a way that the mean values substantially correspond to the values in the time interval of the second measurement, characterized in that - acceleration forces acting on the gyroscope (4) are measured in two directions which are perpendicular to one another and approximately perpendicular to the axis of rotation of the gyroscope, - the mean value formation is applied in a similar manner to the measured values of the acceleration forces, and the averaged measured values are used to determine a horizon reference, and in that - the gyroscope information measured and obtained by corrected mean value formation is corrected on the basis of the horizon reference.