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An on-orbit absolute calibration system and calibration method for a marine satellite altimeter

A satellite communication system and altimeter technology, which is applied to satellite radio beacon positioning systems, radio wave measurement systems, instruments, etc., can solve the problems of reduced accuracy, echo signal interference, and high calibration costs, so as to improve accuracy and improve intelligence. , cost-saving effect

Active Publication Date: 2020-03-24
THE FIRST INST OF OCEANOGRAPHY SOA
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Problems solved by technology

[0004] The main international calibration sites are Harvest Oil Platform in the United States, Bass Strait in Australia, Corsica Island in France and Crete Island in Greece. At present, there is no satellite altimeter calibration site in China, and the calibration cost is high
At the same time, when the satellite-borne altimeter passes the land or the coast, its echo signal will be interfered, reducing its accuracy

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  • An on-orbit absolute calibration system and calibration method for a marine satellite altimeter
  • An on-orbit absolute calibration system and calibration method for a marine satellite altimeter

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0029] The invention provides an on-orbit absolute calibration system and a calibration method for a marine satellite altimeter, which can improve the intelligence of the calibration work, save the calibration cost, and improve the calibration accuracy.

[0030] Such as figure 1 The on-orbit absolute calibration system of the marine satellite on-board altimeter includes the Beidou second-generation satellite navigation and positioning system, the Beidou satellite communication system, the shore base station, the satellite calibrator and the marine satellite on-board altimeter data server.

[0031] Beidou second-generation satellite navigation and positioning system includes Beidou second-generation satellites and Beidou second-generation satellite data servers. Beidou satellit...

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Abstract

The invention discloses an oceanographic satellite spaceborne altimeter on-orbit absolute calibration system. The system comprises a Beidou second-generation satellite navigation positioning system, a Beidou satellite communication system, a shoreside base station, a satellite scaler and an oceanographic satellite spaceborne altimeter data server. The invention further discloses a calibration method of the calibration system. The shoreside base station calculates the absolute deviation between the sea area elevation where a data collector is located and the corrected elevation of an oceanographic satellite spaceborne altimeter, and calibration is completed. By means of the system, global all-weather on-orbit calibration can be conducted on any oceanographic satellite spaceborne altimeter, influences of land or coastal zones on signals of the oceanographic satellite spaceborne altimeter are avoided, and the precision of calibration results is improved. The system improves the intelligence of oceanographic satellite spaceborne altimeter on-orbit absolute calibration, and reduces the calibration cost.

Description

technical field [0001] The invention belongs to the field of marine surveying and mapping, and relates to an on-orbit absolute calibration system and calibration method for a marine satellite space-borne altimeter based on the Beidou second-generation satellite navigation and positioning system and the Beidou satellite communication system. Background technique [0002] With its high measurement accuracy and good coverage, satellite altimetry technology provides important data support for global sea level change monitoring and marine dynamic environment research. It has great potential to provide high-precision gravity field data for the improvement of ballistic missile shooting accuracy and strategic nuclear submarines. [0003] Accurately determining and monitoring global sea level changes is an important task of satellite-borne altimeters, which is of great significance to ocean research and applications. An altimeter satellite usually has a service life of 5-7 years. Th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00G01S19/14
CPCG01C25/00G01S19/14
Inventor 梁冠辉周兴华周东旭唐秋华雷宁杨磊
Owner THE FIRST INST OF OCEANOGRAPHY SOA