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A dual-position rotary north-seeking measurement method based on static moment mode gyro total station

A measurement method and dual-position technology, applied in rotating gyroscopes and other directions, can solve problems such as systematic errors, long north-seeking time, and poor data stability, and achieve the effect of improving orientation accuracy and eliminating or weakening system errors

Active Publication Date: 2017-10-27
CHANGAN UNIV
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Problems solved by technology

[0005] The present invention proposes a dual-position rotary north-seeking measurement method based on a static moment mode gyro total station, which solves the technical problems of long north-seeking time, poor data stability, and difficult elimination of systematic errors in the traditional gyro north-seeking method

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  • A dual-position rotary north-seeking measurement method based on static moment mode gyro total station
  • A dual-position rotary north-seeking measurement method based on static moment mode gyro total station
  • A dual-position rotary north-seeking measurement method based on static moment mode gyro total station

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Embodiment Construction

[0047] The dual-position rotary north-seeking method of the present invention refers to collecting north-seeking data at two different positions, and accurately calculating the north-direction deflection angle of the gyroscope rotation axis, thereby obtaining the north-seeking method for the north-seeking value. Its main ideas are as follows: Figure 4 As shown, the N direction is the true north direction. When installing the instrument, the direction pointed by the north mark 62 of the gyroscope should roughly point to the true north direction (-10°, +10°). When the gyroscope starts to perform north-seeking measurement , the disk conversion module first drives the gyro sensitive part, so that the gyro motor 35 rotates in the direction of the axis 56 (OR 1 direction) turn to the direction indicated by the north sign 62, and arrive at the first north-seeking position. After the north-seeking sampling at this position, the angle between the zero scale line direction of the elect...

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Abstract

The invention discloses a double-position rotary north-seeking measurement method for a static moment mode based gyroscopic total station. The method comprises the following steps: 1, instrument installation; 2, gyrostatic orientation survey: a. the rotary shaft direction of a gyro motor is aligned to the zero graduation line direction of an electronic scale plate in an angle measurement device of a gyroscope; north-seeking measurement is performed in a first position: c. calculation is performed to obtain an included angle between the real north direction and the zero graduation line direction of the electronic scale plate in the angle measurement device of the gyroscope in the first position; d. an included angle between the real north direction and the zero graduation line direction of the electronic scale plate in the angle measurement device of the gyroscope in a second position is obtained; 3, observation of alignment system direction; and 4, calculation of real north azimuth of a measurement line. The method effectively solves the technical problems of long north-seeking time, poor data stability, difficulty in removing systematic errors and the like in a conventional north-seeking method, and can effectively remove or reduce the errors of partial instruments and observation systems and improve the orientation precision.

Description

technical field [0001] The invention relates to a two-position rotary north-seeking measurement method based on a static moment mode gyroscope total station. This method can be widely used in the construction of various gyro total stations in static mode and the penetration measurement of tunnels, roadways, diversion tunnels and other projects. Background technique [0002] The gyro total station is a directional instrument that can independently and accurately determine the true north direction of any point on the earth. Its measurement principle is to sense the angular momentum of the earth's rotation through a high-speed rotating gyro. It can be applied to penetrating conductor measurement error accumulation correction, initial azimuth calibration, etc. It is mainly used in the penetration measurement of highway and railway tunnels, coal mine roadways, diversion tunnels, navigation equipment calibration, rocket, missile and other weapon launch system orientation. [0003...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C19/34G01C19/26
CPCG01C19/26G01C19/34
Inventor 石震杨志强马骥
Owner CHANGAN UNIV
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