Indoor GPS (iGPS)-based single-station and multi-point time-sharing measurement method

Abstract

The invention discloses an indoor GPS (iGPS)-based single-station and multi-point time-sharing measurement method, which comprises the steps of setting up a single-station and multi-point time-sharing measurement platform, establishing a coordinate system OXYZ for an automatic rotation device, adopting the coordinate system OXYZ as a global coordinate system, defining a coordinate system O0X0Y0Z0 for the initial position of a launch station, calibrating the coordinate value (x0, y0, z0) of the initial position of the launch station in the global coordinate system, rotating the launch station around an O-axis under the effect of the automatic rotation device to move the launch station to different places, calculating a real-time position coordinate system (OiXiYiZi) of the launch station to figure out the real-time coordinate value thereof (xi, yi, zi), receiving optical signals sent by the launch station at different places by means of a receiver, establishing a position relationship equation between the receiver and the launch station in the global coordinate system according to a conversion equation between the real-time position coordinate system of the launch station and the global coordinate system, solving out the three-dimensional coordinate of the receiver in the global coordinate system based on the iterative algorithm, and realizing the spatial positioning effect. According to the technical scheme of the invention, the receiver can be positioned only by means of the single launch station. The method is high in efficiency and low in cost. Through the multi-point time-sharing measurement process, the positioning accuracy is effectively improved.

Description

technical field [0001] The invention relates to a measurement space positioning method based on iGPS technology, in particular to a single-station multi-point time-sharing measurement space positioning method based on iGPS technology. Background technique [0002] In recent years, iGPS technology, as a coordinate measurement technology that can determine the position coordinates of the receiver using a multi-station rendezvous measurement method, has been widely used in large-scale geometric metrology, positioning and assembly in large-scale or super-large equipment manufacturing industries. It has the characteristics of large space range, large number of measurable points and simultaneous measurement, high measurement accuracy and short measurement time. [0003] However, judging from the current usage, there are still some shortcomings and deficiencies: [0004] When iGPS technology locates the receiver through the multi-station rendezvous method, at least two transmittin...

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Problems solved by technology

[0004] When iGPS technology uses the multi-station rendezvous method to locate the receiver, at least two transmitting stations are needed to complete it. At the same time, in order to improve the measurement accuracy, it is also necessary to increase the number of transmitting stations, which makes the layout, installation and calibration of the transmitting stations The work is greatly increased, which seriously affects the measurement efficiency and increases the measurement cost to a certain extent

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