ERROR CORRECTING DEVICE FOR GYRO COMPASS

PURPOSE:To facilitate removal of the error of a gyro owing to an inclination angle detecting error by providing an error correcting device to input a signal from a device to output an inclination angle with the horizontal plane of the spin shaft of a gyro compass. CONSTITUTION:A model computing part A2 of an error computing part 100A compares a detecting inclination signal SA with an equivalent signal SB from a computing part by means of a comparator 101. After a gain K is multiplied by factor devices 102-104, a correction amount epsilon is outputted to a computing part Al, and values theta, phiand (b) are corrected. An external information processing part A3 computes V'ns and V'ns with the aid of a south north speed computing part 105 and a differentiator 106. The same state as that produced at a gyro by a navigating body is applied on a computing part A1, and A2 performs a work equivalent to a negative feedback loop. A bias error correcting part 100B takes out an equivalent bias estimating amount from the computing part 100A, correction signals A1 and A2 are returned through factor devices 107 and 108 to a computing part A1 for correction. An azimuth error correcting part C takes out an azimuth error estimating amount from the computing part 100A and by subtracting the azimuth error estimating amount from an azimuth signal Az, a true bearing signal Azt is outputted.