An underwater pnt system with wide area coverage and autonomous monitoring

Abstract

An underwater PNT system with wide-area coverage and autonomous monitoring, including: a surface section, a user section, an underwater section, and a shore-based control center; The space-time reference is transmitted to the underwater section and information interaction; the user section is equipped with user terminals; the underwater section is equipped with an underwater PNT network, and the user terminal uses the underwater PNT network for underwater positioning, navigation and timing; the underwater PNT network is Configured as a regional network composed of submarine base station links constructed by multiple submarine base stations, the underwater PNT network has autonomous monitoring through the submarine base station links; the shore-based control center is used to monitor the work of the surface section, user section and underwater section state, and process the acquired data. The underwater PNT system has integrity monitoring function, inter-base station link function and wide-area service capability, communication integration function and remote communication function, and can be adaptively corrected according to the environmental characteristics of the sea area.

Description

technical field [0001] The invention relates to the field of underwater positioning, navigation and timing systems, in particular to an underwater PNT system with wide-area coverage and autonomous monitoring. Background technique [0002] On the water, it has an all-round, all-weather, all-time, high-precision satellite navigation system, which can provide global users with low-cost, high-precision three-dimensional position, speed and precise time PNT information. Underwater, in order to meet the needs of the rapidly developing underwater platforms for underwater positioning, navigation and timing, a global underwater positioning (P), navigation (N), and timing based on Beidou is provided. (T) system, which has the characteristics of small size, low power consumption, high concealment, high precision and long-time work, and is mainly composed of submarine base stations, surface buoys, shore-based control centers, and client terminals. [0003] As the main component of the ...

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