ADCP外接GNSS罗经仪测流系统安装偏移量测定

doi:10.16232/j.cnki.1001-4179.2019.12.011

摘要/Abstract

摘要： 声学多普勒流速剖面仪（ADCP）外接GNSS罗经仪组成ADCP测流系统，采用GNSS罗经仪提供的绝对基准，能解决ADCP底跟踪失效以及其内部磁罗经受干扰磁场影响所导致的方位误差等问题，前提是安装在船体上的ADCP、GNSS罗经和船体三者的坐标系统必须一致，但安装偏移量的探测一直困扰着该系统的推广应用。通过测量ADCP与GNSS罗经天线之间的水平距离，并沿顺流或逆流方向直线航行一段距离，获取ADCP和GNSS罗经原始数据，计算得出ADCP、GNSS罗经与船体坐标系的偏角和GNSS定位天线的位置偏移量，并在ADCP数据采集软件里设置这些偏移量，取得了预期的应用效果。

关键词: 流速测量, 声学多普勒流速剖面仪, GNSS罗经仪, 安装偏移量, 水文测验

Abstract: ADCP measurement system consists of acoustic doppler current profiler (ADCP) and external added GNSS compass. By using absolute reference provided by the GNSS compass, it can solve ADCP bottom tracking failure and the azimuth error due to internal magnetic compass disturbed by magnetic field under the premise that the coordinate system of the ADCP, GNSS compass installed on the hull must be the same. But the determination of installation deviation has been perplexing the promotion of the system. By measuring the horizontal distance between ADCP and GNSS compass antenna, and sailing along the direction of downstream or upstream in a straight line for a distance, we obtained the initial data of ADCP and GNSS compass. Then, we calculated the declination of ADCP, GNSS compass and hull coordinate system and the position offset of GNSS positioning antenna. These offsets were set in the ADCP data acquisition software and the expected application results are achieved

Key words: flow velocity measurement, acoustic doppler current profiler, GNSS compass, installation offset, hydrometry

张美富. ADCP外接GNSS罗经仪测流系统安装偏移量测定[J]. 人民长江, doi: 10.16232/j.cnki.1001-4179.2019.12.011.

ZHANG Meifu. Determination of installation offset of ADCP external added GNSS compass measurement system[J]. , doi: 10.16232/j.cnki.1001-4179.2019.12.011.

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ADCP外接GNSS罗经仪测流系统安装偏移量测定

Determination of installation offset of ADCP external added GNSS compass measurement system

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