A joint measurement method based on three-point resection model

Abstract

The invention relates to a combined measuring method based on a three-point resection model and belongs to the technical field of engineering measurement. In the method, firstly a laser tracker is employed for respectively measuring true north orientations of three orientation points, and then a gyro theodolite is employed for measuring a horizontal angle and a vertical angle of the three orientation points. Coordinate of an original point of a coordinate system of the gyro theodolite in the coordinate system of the laser tracker, and then a conversion parameter of the coordinate system of the laser tracker relative to a true north coordinate system can be calculated according to the calculated original point and the coordinate of any orientation point, and finally the laser tracker is employed for measuring the coordinate value of a target point of an launching vehicle so that the orientation of a connecting line of the target point in the coordinate system of an instrument is back-calculated and the true north orientation of the connecting line of the target point is calculated according to the conversion parameter. By means of the three-point resection model, coordinate systems of the laser tracker and the gyro theodolite are integrated so that the true north orientation of the model launching vehicle is directly measured and obtained under the coordinate system of the laser tracker. The method is simple and easy to carry out.

Description

technical field

[0001] The invention relates to a joint measurement method based on a three-point resection model, belonging to the technical field of engineering measurement. Background technique

[0002] The current true north azimuth measurement methods mainly include gyro orientation measurement and astronomical measurement. These methods are characterized in that a high-precision azimuth edge can be calibrated after a large number of repeated measurements for a long time. The disadvantages are: 1. Each measurement requires multiple measurement rounds A large number of repeated observations takes a long time, and it is difficult to quickly calibrate multiple azimuth edges; second, only one azimuth edge can be calibrated at a time, and the azimuth edge is the connection between the center point of the instrument and the target point, which means For the target point on the launch vehicle that cannot be centered by the instrument, this type of method cannot directly measur...

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