Ship formation precise positioning system and method based on TDOA principle

A precise positioning and ship technology, applied in positioning, radio wave measurement systems, measuring devices, etc., can solve problems such as limited geometric size and inability to meet positioning accuracy requirements
CN109239658APending Publication Date: 2019-01-18成都和跃科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
成都和跃科技有限公司
Publication Date
2019-01-18

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Abstract

The invention relates to a ship formation precise positioning system and method based on a TDOA principle. The system comprises a first time frequency source on a positioned chip; a single-channel receiver and a receiving antenna which are connected; a first wireless network communicator and a first transceiving antenna which are connected; a second time frequency source on a central station chip;a multi-channel receiver and the receiving antennas which are connected; a second wireless network communicator and a second transceiving antenna which are connected; and a central control system. The first transceiving antenna is coupled with the receiving antenna of each receiving channel of the multi-channel receiver, the receiving antenna of the single-channel receiver and the second transceiving antenna. The system is a new positioning system based on the TDOA principle in a collaboration mode. Positioning precision is greatly improved. The precision deficiency resulting from the fact that a base line is too short is compensated. The technical problem of high precision mutual positioning among ships in maritime chip formation is solved successfully.
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Description

technical field

[0001] The invention belongs to the field of radio positioning, in particular to a ship formation precise positioning system and method based on the principle of TDOA (time difference of arrival). Background technique

[0002] It is very important to grasp the position information of each ship in the ship formation and the precise positioning relationship between them in real time. On the one hand, it can allow command decision makers to understand the situation of maritime transportation or naval battlefields. On the other hand, this precise geometric relationship is the battlefield The prerequisite for the fusion processing of multi-type target information in the environment. At present, GNSS systems are mainly used for ship positioning, including GPS in the United States, GLONASS in Russia, Galileo in Europe, etc. my country's Beidou navigation system has also completely covered the Asia-Pacific region, with sub-meter positioning accuracy.

[0003] Howeve...

Claims

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