大地测量与地球动力学2012，Vol.32Issue(6)：135-138,4.
利用GPS接收机反射信号测量水面高度
MEASURING WATER SURFACE HEIGHT BY USING REFLECTED SIGNAL OF GEODETIC-QUALITY GPS RECEIVER
摘要
Abstract
A water surface height measurement method using reflected signal collected by a single geodetic-quality receiver is developed. Signal-to-noise ratio (SNR) is derived from the carrier tracking loop outputs and is the sum of the direct and reflected amplitude, as reflected amplitude is much smaller than the direct amplitude due to receiving antenna gain pattern effects and indirect signal attenuation upon reflection, then the reflected signal amplitude can be separated from the SNR data. Finally, a time-variying model which describes the functional relationship between the reflected signal amplitude and the height of reflector is derived, and Lomb-Scargle periodogram is used to solve the model. Two experiments have been conducted under different conditions. The sea surface height derived by GPS reflected signal show excellent agreement with tide gauge measurements.关键词
全球定位系统/反射信号/水面高度测量/Lomb-Scargle谱分析/验潮仪Key words
GPS/ reflected signal/ water surface altimetry/ Lomb-Scargle Periodograms/ tide gauge分类
天文与地球科学引用本文复制引用
吴继忠,杨荣华..利用GPS接收机反射信号测量水面高度[J].大地测量与地球动力学,2012,32(6):135-138,4.基金项目
精密工程与工业测量国家测绘地理信息局重点实验室开放基金(PF2011-9) （PF2011-9）
地球空间环境与大地测量教育部重点实验室开放研究基金(10-01-12) （10-01-12）
