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Gyro azimuth measurement
Feb 01, 2019

The gyro theodolite is placed at the measuring station C. The telescope is used to align the D point and read the horizontal dial reading M to measure the line direction value. After the gyro is operated, the oscillating observation of the gyro axis is used to obtain the dial reading NT of the telescope's collimation axis pointing to the gyro meridian direction, which is called the gyro meridian (or tourbuo) direction value. The gyro azimuth angle of this side is TCD=M-NT. According to the method of measuring the value of the gyro meridian direction NT, the reverse point method, the Zhongtian method, and the like are used.

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