测绘通报 ›› 2017, Vol. 0 ›› Issue (2): 49-53.doi: 10.13474/j.cnki.11-2246.2017.0047

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Comparison and Analysis of Azimuth of Mobile Mapping System

QIAN Jinfei1, YAO Lianbi1,2   

  1. 1. College of Surveying and Geo-informatics, Tongji University, Shanghai 200092, China;
    2. Key Laboratory of Modern Engineering Surveying, NASMG, Shanghai 200092, China
  • Received:2016-03-11 Online:2017-02-25 Published:2017-03-01

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Abstract:

Orientation is of great importance for mobile mapping survey. The azimuths of inertial measure unit(IMU), dual antenna GNSS and trajectory fitting in static and dynamic environment are analyzed by measured data from a mobile mapping system. The result shows that azimuth of dual antenna GNSS is more precise than azimuth of IMU in static environment. While azimuths of IMU and trajectory fitting have better performance in dynamic environment, azimuth of dual antenna GNSS has higher absolute precision in the curve sections.

Key words: mobile mapping system, azimuth, inertial measure unit, dual antenna GNSS, trajectory fitting

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