【摘要】：針對IGS實(shí)時(shí)數(shù)據(jù)流產(chǎn)品,該文開展了實(shí)時(shí)精密單點(diǎn)定位技術(shù)在遠(yuǎn)海實(shí)時(shí)GPS驗(yàn)潮中的應(yīng)用研究。對RTS改正的實(shí)時(shí)精密衛(wèi)星軌道和鐘差進(jìn)行了精度驗(yàn)證和分析,給出了實(shí)時(shí)精密單點(diǎn)定位的數(shù)據(jù)處理策略以及實(shí)時(shí)GPS驗(yàn)潮的基本流程;組織和實(shí)施了渤海灣船載GPS驗(yàn)潮試驗(yàn),以壓力式驗(yàn)潮儀數(shù)據(jù)為參考,對遠(yuǎn)距離實(shí)時(shí)GPS潮汐測量結(jié)果進(jìn)行了精度分析。結(jié)果表明:以IGS最終衛(wèi)星軌道和鐘差產(chǎn)品為參考,實(shí)時(shí)數(shù)據(jù)流產(chǎn)品實(shí)時(shí)精密衛(wèi)星軌道在X、Y、Z方向的精度均優(yōu)于3cm,衛(wèi)星鐘差的精度優(yōu)于0.15ns;采用傅里葉低通濾波方法,消除波浪對潮汐觀測的影響,進(jìn)一步提取潮位信息。在忽略船體姿態(tài)改正的情況下,實(shí)時(shí)精密單點(diǎn)定位驗(yàn)潮相對于壓力式驗(yàn)潮儀結(jié)果的最大偏差優(yōu)于20cm,RMS達(dá)到7.5cm。
[Abstract]:Aiming at IGS real time data stream, the application of real time precise single point positioning technology in remote sea real time GPS tide detection is studied in this paper. The precision verification and analysis of the real time precise satellite orbit and clock error corrected by RTS are carried out. The data processing strategy of real time precise single point positioning and the basic flow chart of real time GPS tide check are given. Based on the data of the pressure type tide gauge, the accuracy of the long distance real-time GPS tidal measurement results is analyzed by organizing and carrying out the GPS tidal test on the Bohai Bay. The results show that the precision of real-time precise satellite orbit is better than 3 cm in the direction of XNY Z, and the accuracy of satellite clock difference is better than 0.15 ns with reference to IGS final satellite orbit and clock difference product. Fourier low pass filter is used to eliminate the influence of wave on tidal observation and to extract tidal level information. In the case of ignoring the hull attitude correction, the maximum deviation of the real time precision single point positioning tide gauge relative to the pressure tide gauge is better than that of 20 cm ~ (-1) RMS up to 7.5 cm 路m ~ (-1).
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本文編號：2380169