Accurate ship positioning method based on Beidou system, GPS system and GLONASS system
A precise positioning, three-system technology, applied in the direction of radio wave measurement system, satellite radio beacon positioning system, measurement device, etc., can solve the problems affecting the real-time performance of positioning and the decrease of calculation efficiency
Active Publication Date: 2020-07-10
中船重工鹏力(南京)大气海洋信息系统有限公司 +2
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However, most of the researches on traditional satellite selection methods focus on single-mode GNSS and a few on BDS-GPS and GPS-GLONASS dual-mode positioning systems. real-time positioning
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[0059] The present invention will be further described in detail below in conjunction with the drawings and specific preferred embodiments.
[0060] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "left side", "right side", "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, and only In order to facilitate the description of the present invention and simplify the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, "first", "second", etc. do not indicate the components The degree of importance cannot therefore be understood as a limitation of the present invention. The specific dimensions used in this embodiment are only used to illustrate the technical solution and do not limit the protection scope of the present inven...
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The invention discloses an accurate ship positioning method based on a Beidou system, a GPS system and a GLONASS system, and the method comprises the specific steps: firstly carrying out preliminary screening on satellites of the three systems according to a signal-to-noise ratio, and correcting a pseudo-range measurement value of each screened satellite through an error model; then respectively calculating the position of each satellite according to ephemeris data of the three systems, and carrying out space-time conversion and unification on the satellites of the three systems; then, carrying out Beidou, GPS and GLONASS three-mode pseudo-range positioning calculation, and preliminarily solving the approximate position of the ship; calculating azimuth angles and altitude angles of the satellites relative to the ship, and screening the three-system satellites again by adopting a rapid satellite selection strategy; and then using the screened three-system satellites to carry out positioning calculation on the ship again, and finally determining the accurate position of the ship at the current moment. Compared with traditional single-mode and dual-mode ship navigation positioning methods, the method is higher in positioning precision, higher in positioning speed and higher in system fault-tolerant capability.
Description
Technical field [0001] The invention relates to the field of ship navigation and positioning, in particular to a ship precise positioning method based on Beidou, GPS and GLONASS three systems. Background technique [0002] The vigorous development of my country's social economy and the solid advancement of the "marine power" strategy have led to the year-on-year growth of water transport business, and the number of ships has increased dramatically. At the same time, this has also led to a series of problems such as prominent ship traffic pressure, reduced ship navigation efficiency, increased resource consumption, and water environmental pollution, which has caused severe challenges to ship traffic, energy, and the environment. In order to effectively solve the above problems, many scholars have started the research of VesselTraffic Services (VTS), aiming to improve transportation with advanced navigation and positioning technology, multi-source sensor technology, data communicat...
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Login to View More IPC IPC(8): G01S19/42G01S19/33G01S19/28
CPCG01S19/423G01S19/33G01S19/28
Inventor 夏亮周晓安夏金峰王子骏金家龙宗成明刘淑
Owner 中船重工鹏力(南京)大气海洋信息系统有限公司