Positioning navigation time service system
A positioning, navigation, and timing system technology, applied in the field of positioning, navigation, and timing, can solve the problems of narrow use range of PNT system, insufficient navigation accuracy, and error accumulation
Active Publication Date: 2021-02-19
NAVAL UNIV OF ENG PLA
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[0003] The existing PNT system is mainly a combination of single or several methods of navigation, positioning and timing systems, such as the combination of GNSS and inertial navigation, the combination of inertial navigation and odometer, the combination of inertial navigation and sonar, etc. Interference, error accumulation and other problems; moreover, the existing PNT system has problems such as narrow use range and small application field. If it is necessary to form a large PNT system or a national-level PNT system, it is difficult to achieve the required Require
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0034] The present invention provides a positioning, navigation and timing system, including a perception unit, a preprocessing parameter unit, a local space-time parameter unit, an environment information unit, a ...
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The invention provides a positioning navigation time service system. The positioning navigation time service system comprises a sensing unit, a preprocessing parameter unit, a local space-time parameter unit, an environment information unit, a multi-source information fusion unit, a system application service unit and a system service management unit, wherein the sensing unit, the preprocessing parameter unit and the local space-time parameter unit are connected in sequence; the multi-source information fusion unit, the system application service unit and the system service management unit areconnected in sequence; the preprocessing parameter unit is connected with the environment information unit; and the local space-time parameter unit is connected with the multi-source information fusion unit. According to the invention, PNT information support is carried out in allusion to a spatial global area, and a unified abstract full-source navigation information fusion framework is constructed in allusion to the problems of limited application scenarios, error accumulation and the like existing in a current PNT system, so that strong PNT information is obtained.
Description
technical field [0001] The invention relates to the technical field of positioning, navigation and timing, in particular to a positioning, navigation and timing system. Background technique [0002] Positioning, navigation, and timing (PNT) is a key technology to describe time and space. With the development of the times, people's dependence on PNT has surpassed any period in history. The application of the PNT system is a very important field in the application of Beidou. Compared with consumer electronics products, the independence and localization of the PNT system are of great significance. [0003] The existing PNT system is mainly a combination of single or several methods of navigation, positioning and timing systems, such as the combination of GNSS and inertial navigation, the combination of inertial navigation and odometer, the combination of inertial navigation and sonar, etc. Interference, error accumulation and other problems; moreover, the existing PNT system h...
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IPC IPC(8): G01S19/14G04R20/02G01D21/02
CPCG01S19/14G04R20/02G01D21/02
Inventor 卞鸿巍许江宁毛宁何泓洋王荣颖马恒
Owner NAVAL UNIV OF ENG PLA