Gyroscopic compass multiple positions self-determination orienting north finding device

Abstract

The invention relates to a gyro compass multifunction automatic orientation north-searching device, the technical proposal is that: when a rotary table is arranged in an orientation position, a controller calculates the error between a predetermined rotary table orientation position and the output angle value of an encoder; correct controlling quantity is thus calculated according to the error value and width-adjusting wave is output to drive a motor to lead the rotary table to rotate to next orientation position; the device which detects an included angle between the encoder null position and the true north receives, on a plurality of orientation positions in a scope of one cycle, the data of northbound component of a gyro and the angle value which is output by the encoder, fits the curve relationship between the north component and the corresponding dislocation of the encoder angle value, and calculates precisely the angle between the null position of the encoder and the true north. The invention has a short north-searching time and high precision of north-searching.

Description

technical field

[0001] The invention relates to a gyro compass north-finding device, in particular to a gyro compass multi-position autonomous orientation north-finding device. Background technique

[0002] Inertial north-seeking technology is an important part of the inertial technology field. With the development of precise measurement technology, there are many methods for north-seeking positioning, such as: inertial method, astronomical observation method, geodetic method, satellite positioning method, reference object method, etc. A variety of high-precision north-finding methods. However, under special conditions such as tunnels, underwater and other complex terrains, complex weather, and war environments, astronomical observation methods, geodesy methods, satellite positioning methods, and reference object methods will all be subject to varying degrees of conditional constraints, or the accuracy is low, or they are not accurate at all. Unable to implement. Only the ...

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