Results of determining the geoid height profile and vertical line deviation using GNSS signals reflected from water surface

Geodesy
UDC: 
528.024.1
DOI: 
10.22389/0016-7126-2024-1004-2-21-30
1 Lopatin V.P.
2 Murzabekov M.M.
3 Bobrov D.S.
Year: 
2024
№: 
2
1004
Pages: 
21-30

FSUE «All-Russian Scientific Research Institute of Physical-Technical and Radiotechnical Measurements» (FSUE «VNIIFTRI»)

1, 
2, 
3, 
Abstract:
The method for determining geoid elevations, based on the use of GNSS signals reflected from water surface, is called bistatic one. Its features are small dimensions and weight of the necessary on-board equipment, and that enables mounting them on a nano-satellite, as well as simultaneously determining several dozen geoid height profiles. It corresponds to the number of visible navigation satellites from among GLONASS, GPS, Galileo, BeiDou. Several space projects using the technology under description were implemented abroad, their analysis has shown the possibility of determining geoid heights with an error of 10–20 cm, as well as sea ice thickness. The authors provide a review of some similar projects, an assessment of the simultaneously determined number of geoid height profiles, and calculation of its elevations and deflection of vertical along a single profile based on primary measurements from the project of CYGNSS. To compensate for various interfering parameters when calculating geoid elevations, the following models were used: of ocean tide EOT20; of mean global sea level DNSC08; the ionospheric CODG one; the climate parameters ERA5. Based on the results of comparison with data from the EGM2008 geopotential model, standard deviations of the difference were obtained for geoid elevations of 15,9 cm and for a deflection of vertical of 1′′
The research was supported by the Russian Science Foundation grant No. 23-67-10007
References: 
1.   Savel'eva E.A., Dem'yanov V.V. Geostatistika: teoriya i praktika. Pod red. R.V. Arutyunyana. M.: Nauka, 2010, 327 p.
2.   Lebedev S. A. Sputnikovaya al'timetriya v naukakh o Zemle. Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2013, Vol. 10, no. 3, pp. 33–49.
3.   Lopatin V. P., Fateev V. F. Metody opredeleniya vysoty geoida i skorosti pripoverkhnostnogo vetra po otrazhennym ot poverkhnosti okeana signalam global'nykh navigatsionnykh sputnikovykh sistem. Al'manakh sovremennoi metrologii, 2021, no. 4 (28), pp. 73–83.
4.   Ogorodova L.V. Vysshaya geodeziya. Chast' III. Teoreticheskaya geodeziya: Ucheb. dlya vuzov. M.: Geodezkartizdat, 2006, 384 p.
5.   Andersen O. B., Knudsen P. (2009) DNSC08 mean sea surface and mean dynamic topography models. Journal of Geophysical Research Atmospheres, no. 114 (—11), DOI: 10.1029/2008JC005179.
6.   Bonnefond P., Exertier P, Laurain O., Ménard Y., Orsoni A., Jan G., Jeansou E. (2003) Absolute Calibration of Jason-1 and TOPEX/Poseidon Altimeters in Corsica. Marine Geodesy, no. 26 (3–4), pp. 261–284. DOI: 10.1080/714044521.
7.   Cardellach E., Li W., Rius A., Semmling M., Wickert J., Zus F., Ruf C., Buontempo C. (2020) First Precise Spaceborne Sea Surface Altimetry with GNSS Reflected Signals. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, no. 13, pp. 102–112. DOI: 10.1109/JSTARS.2019.2952694.
8.   Cortiella A., Vidal D., Jané J., Juan E., Olivé R., Amézaga A., Munoz-Martin J. F., Carreno-Luengo H., Camps A. (2016) 3CAT-2: Attitude Determination and Control System for a GNSS-R Earth Observation 6U CubeSat Mission. European Journal of Remote Sensing, no. 49 (1), pp. 759–776. DOI: 10.5721/EuJRS20164940.
9.   Guo J. Y., Shen Y., Zhang K., Liu X., Kong Q., Xie F. (2016) Temporal-spatial distribution of oceanic vertical deflections determined by TOPEX/Poseidon and Jason-1/2 missions. Earth Sciences Research Journal, no. 20 (2), H1–H5, DOI: 10.15446/esrj.v20n2.54402.
10.   Hart-Davis M. G., Piccioni G., Dettmering D., Schwatke C., Passaro M., Seitz F. (2021) EOT20: a global ocean tide model from multi-mission satellite altimetry. Earth System Science Data, no. 13 (8), pp. 3869–3884. DOI: 10.5194/essd-2021-97.
11.   Li W., Cardellach E., Fabra F., Ribó S., Rius A. (2018) Lake level and surface topography measured with spaceborne GNSS-reflectometry from CYGNSS mission: example for the lake Qinghai. Geophysical research letters, no. 45 (24), pp. 13,332–13,334. DOI: 10.1029/2018GL080976.
12.   Li W., Cardellach E., Fabra F., Rius A., Ribó S., Martín-Neira M. (2017) First spaceborne phase altimetry over sea ice using TechDemoSat-1 GNSS-R signals. Geophysical Research Letters, no. 44 (16), pp. 8369–8376. DOI: 10.1002/2017GL074513.
13.   Nguyen V. A., Nogués-Correig O., Yuasa T., Masters D., Irisov V. (2020) Initial GNSS phase altimetry measurements from the Spire satellite constellation. Geophysical Research Letters. no. 47 (15), DOI: 10.1029/2020GL088308.
14.   Unwin M., Jales P., Tye J., Gommenginger C. P., Foti G., Rosello J. (2016) Spaceborne GNSS-Reflectometry on TechDemoSat-1: Early Mission Operations and Exploitation. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, no. 9 (10), pp. 4525–4539. DOI: 10.1109/JSTARS.2016.2603846.
15.   Wang C. (2020) Global ionospheric maps with a high temporal resolution. Results in Physics, no. 16:102927, DOI: 10.1016/j.rinp.2020.102927.
Citation:
Lopatin V.P., 
Murzabekov M.M., 
Bobrov D.S., 
(2024) Results of determining the geoid height profile and vertical line deviation using GNSS signals reflected from water surface. Geodesy and cartography = Geodezia i Kartografia, 85(2), pp. 21-30. (In Russian). DOI: 10.22389/0016-7126-2024-1004-2-21-30
Publication History
Received: 29.11.2023
Accepted: 29.12.2023
Published: 20.03.2024

Content

2024 February DOI:
10.22389/0016-7126-2024-1004-2