一种基于gnss相对定位的事故车辆精密定位方法

Accident vehicle precision positioning method based on GNSS relative positioning

  • Inventors: CHEN XIANGNAN
  • Assignees: 陈湘南
  • Publication Date: August 11, 2017
  • Publication Number: CN-107037464-A

Abstract

The invention discloses an accident vehicle precision positioning method based on GNSS relative positioning. The accident vehicle precision positioning method comprises steps that S1, a GNSS receiver used to output carrier phase information is disposed on a vehicle, and is used to acquire carrier phases output by the GNSS receiver; S2, inter-epoch difference and inter-satellite difference of carrier phases of adjacent epochs are carried out to acquire double-difference carrier phases, and the integer ambiguities of the double-difference carrier phases are determined; S3, according to an acquired double-difference carrier phase set, a vehicle relative position relation among the epochs is calculated; S4, a vehicle position corresponding to one epoch is used as a coordinate origin, and according to the position relation among the epochs, a complete motion curve with respect to the coordinate origin is calculated. The accident vehicle precision positioning method has advantages of simple principle, easy realization and popularization, and high precision.
本发明公开了一种基于GNSS相对定位的事故车辆精密定位方法,其步骤为:S1:预先在车辆上安装输出载波相位信息的GNSS接收机,并实时采集GNSS接收机输出的载波相位;S2:对相邻历元的载波相位进行历元间和卫星间差分,得到双差载波相位,并确定双差载波相位的整周模糊度;S3:根据得到的双差载波相位集合,计算历元间的车辆相对位置关系;S4:以其中某一历元时相对应的车辆的位置作为坐标原点,根据历元间的位置关系,计算相对于坐标原点的完整运动轨迹。本发明具有原理简单、易实现和推广、精度高等优点。

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