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Research on Self-calibration Technology of the Indoor GPS Industry Measurement System |
LV Jing-liang1,ZHANG Chun-fu1,TANG Wen-yan1,HAO Xin-yu2 |
1. Automatic Measurement and Control, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
2. Institute of Metrology on Physics and Chemistry, Capital Aerospace Mechinery Company, Beijing 100076, China |
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Abstract The relative positions and spatial attitudes of transmitters in Indoor GPS industry measurement system should be calibrated before the measurement being carried on. A single cylindrical sensor will be adopted combining a scale bar to obtain the azimuths and elevations of the transmitters at different spatial points in order to carry on the self-calibration. The transforming model of coordinate parameters based azimuth and elevation angles are established and calculated through least square algorithm of non-linear optimization to accomplish the self-calibration. Experiment testing shows that this calibration method is convenient and feasible.
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