Determining water wave patterns using RGPS technique

Po Hsien Hsu, Lie Chung Shen, Ching Liang Tseng, Jaw Fang Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The purpose of this study is to use the direct and reflected signals of GPS to determine the patterns of water wave in the water flume, as well as to establish a practicable technique of measuring sea water level. The measurements of (1) water waves in the Super Tank and tranquil water level with steadily descending water level in the Mid-size wave flume of the Tainan Hydraulics Laboratory, National Cheng Kung University, and (2) sea water level in the Tainan An-Ping Harbor, were performed. In this research, an integrated GPS receiver that employed direct and reflected GPS signals for the measurement was introduced. Both RHCP and LHCP antennas were employed to simultaneously receive the L1 and L2 carrier phase of direct and reflected signals. After the data analysis of the GPS observation, the position of signal reflection and the water level of the wave were solved. After improving RGPS positioning procedure, the tranquil water level and the steadily descending of water level observation for one hour were performed, and the results of the RGPS, wave gauge, and staff meter were coincided within 0.5cm ∼ 1.0 cm. In the Super Tank, the 60cm amplitude with 5 second/cycle of regular wave was generated. The differences between the reflection heights of this GPS system and the record of wave gauge were almost identical within 90%. In addition, a 6-hour observation of sea water level in An-Pin Harbor indicated that results among the RGPS, tide gauge, and staff meter had only 1.0cm ∼ 3.0cm differences.

Original languageEnglish
Title of host publication24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011
Pages2296-2302
Number of pages7
Publication statusPublished - 2011 Dec 1
Event24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011 - Portland, OR, United States
Duration: 2011 Sep 192011 Sep 23

Publication series

Name24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011
Volume3

Other

Other24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011
CountryUnited States
CityPortland, OR
Period11-09-1911-09-23

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Communication

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  • Cite this

    Hsu, P. H., Shen, L. C., Tseng, C. L., & Lee, J. F. (2011). Determining water wave patterns using RGPS technique. In 24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011 (pp. 2296-2302). (24th International Technical Meeting of the Satellite Division of the Institute of Navigation 2011, ION GNSS 2011; Vol. 3).