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| 引用本文： | 吴继忠,杨荣华. ����GPS���ջ������źŲ���ˮ��߶�[J]. 大地测量与地球动力学, 2012, 32(6): 135-138 |
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| 作者姓名： | 吴继忠 杨荣华 |
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| 作者单位： | 1. 南京工业大学测绘学院,南京,210009
2. 重庆大学土木工程学院,重庆,400045 |
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| 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);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) |
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| 摘 要： | ???????????????????GPS????????????????????????????????GPS???????????????????????????????????????????÷??????????????????????????????????????????????????????????????????????????????????????Lomb??Scargle???????????????????????????????????????????????ù???????????÷????????????????????????3 cm?????????????????????????????鳱??????μ?????
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| 关 键 词： | ???λ?? ??????? ???????? Lomb-Scargle????? ?鳱?? |
MEASURING WATER SURFACE HEIGHT BY USING REFLECTED SIGNAL OF GEODETIC-QUALITY GPS RECEIVER |
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| Wu Jizhong,and Yang Ronghua. MEASURING WATER SURFACE HEIGHT BY USING REFLECTED SIGNAL OF GEODETIC-QUALITY GPS RECEIVER[J]. Journal of Geodesy and Geodynamics, 2012, 32(6): 135-138 |
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| Authors: | Wu Jizhong and Yang Ronghua |
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| Affiliation: | 1)College of Geomatics Engineering,Nanjing University of Technology,Nanjing 2100092)College of Civil Engineering,Chongqing University,Chongqing 400045 |
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| 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. |
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| Keywords: | GPS reflected signal water surface altimetry Lomb Scargle Periodograms tide gauge |
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