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Distributed inertial network-based high accuracy transfer alignment method

A transfer alignment and distributed technology, applied in directions such as navigation through velocity/acceleration measurement, can solve the problem of insufficient transfer alignment accuracy of the master-sub inertial navigation system, improve alignment performance and fault tolerance level, low cost of use, The effect of strong autonomy

Active Publication Date: 2017-07-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0008] The present invention provides a high-precision transfer alignment method based on a distributed inertial network in order to solve the problems existing in the above-mentioned prior art, overcomes the problem of insufficient transfer alignment accuracy of the main-sub-inertial navigation system, and utilizes the inertial navigation configured at different positions of the carrier Systematic construction of distributed inertial network

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  • Distributed inertial network-based high accuracy transfer alignment method
  • Distributed inertial network-based high accuracy transfer alignment method
  • Distributed inertial network-based high accuracy transfer alignment method

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] The structural block diagram of the high-precision transfer alignment method based on the distributed inertial network of the present invention is as follows figure 1 As shown, the specific steps are as follows:

[0024] Step 1: Construct a distributed inertial network, deploy multiple inertial systems on different parts of the carrier (such as aircraft, ships, etc.), and configure the main inertial navigation system at the center of gravity cg. Such as figure 2 As shown, taking an aircraft as an example, 6 inertial navigation systems with different precisions are configured on different parts of its carrier, and each inertial navigation system is regarded as a node, named as I, J, K, L, M, N. Collect the inertial device data output by each inertial node. The outputs of the gyroscope and accelerometer are respectively Record the output of the inertial dev...

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Abstract

The invention discloses a distributed inertial network-based high accuracy transfer alignment method, belonging to the application category of the technical fields of inertial navigation and transfer alignment. According to the method, a distributed inertial network is established according to the demands and the actual situation, and a plurality of inertial systems are configured at the different parts of a carrier (such as an aircraft, a ship or the like), so that information of a plurality of inertial nodes can be obtained. The reliability of the data output of an inertial device is guaranteed by means of fault detection and isolation; the information of all the nodes is transferred to a certain sub-node for performing data fusion according to a transfer matrix, and inertial measurement information at the certain sub-node is obtained. On the basis of error modeling, a filtering equation is established so as to realize the transfer alignment between the inertial navigation main nodes and the inertial navigation sub-nodes. After the scheme is adopted, external equipment does not need to be additionally arranged, effective redundant inertial information can be provided for the carrier, and local measurement is provided for carrier equipment such as radar tracking and weapon load, so that the accuracy and reliability of the transfer alignment are guaranteed; furthermore, the method has the characteristics of being low in cost, high in autonomy, and the like.

Description

[0001] Technical field: [0002] The invention relates to a high-precision transfer alignment method based on a distributed inertial network, which belongs to the fields of inertial navigation and transfer alignment. [0003] Background technique: [0004] Transfer alignment is to match the reference information provided by the main inertial navigation system with the corresponding information output by the sub-inertial navigation system, so as to obtain the initial attitude information required by the sub-inertial navigation system, and realize the initial initial alignment of the sub-inertial navigation system. It is the key technology of a new generation of fast-response and mobile launch weapon systems, which can greatly improve the response speed of the weapon system and the ability to attack outside the defense zone. However, due to the deflection of the carrier and the installation error of the sub-inertial navigation system, the performance and quality of the transfer a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/16
CPCG01C21/16
Inventor 陈维娜刘建业曾庆化王慧哲赖际舟赵伟熊智孙永荣
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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