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Distributed adaptive filter design method for sensor network

An adaptive filter, sensor network technology, applied in the field of sensor network, can solve the problem of not considering inconsistency

Inactive Publication Date: 2019-07-02
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, many improved distributed filters have been derived on the basis of the existing basic distributed filters, but it has not considered that by adjusting the inconsistency of estimates between sensors to obtain better distributed filters

Method used

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  • Distributed adaptive filter design method for sensor network
  • Distributed adaptive filter design method for sensor network
  • Distributed adaptive filter design method for sensor network

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Embodiment Construction

[0067] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are 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 shall fall within the protection scope of the present invention.

[0068] The invention relates to a method for designing a distributed adaptive filter for a sensor network, comprising the following steps:

[0069] Step 1. Design the overall structure of the distributed filter.

[0070] The structure of the distributed filter is:

[0071]

[0072] In the formula, is the estimated value of the state x(k) obtained by the i-th sensor, and ε is the consistency gain, K i (k) is the filter gain matrix, α i (k) is an adaptive factor, H i is the observation matrix, and A is the system matrix.

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Abstract

The invention relates to a distributed adaptive filter design method for a sensor network. The method comprises the following steps: 1) constructing an overall structure of a distributed filter; 2) obtaining a self-adaptive control law according to the constructed overall structure of the distributed filter; 3) setting an overall architecture of a dynamic cluster mechanism of the distributed filter; 4) determining basic steps for establishing a dynamic cluster mechanism, and 5) designing a fusion estimation method of the distributed filter. compared with the prior art, the distributed filter fusion estimation method has the advantages that the design process is simpler, the filtering effect is more remarkable, the energy consumption of a sensor network is reduced, the service life of a sensor is prolonged, and the like.

Description

technical field [0001] The invention relates to the technical field of sensor networks, in particular to a distributed adaptive filter design method for sensor networks. Background technique [0002] With the advent of the industrial era of smart manufacturing and the advancement of research in the fields of wireless communication and electronics, low-cost wireless sensor networks have been developed. Wireless sensor networks are widely used in state estimation in complex and dangerous environments including battlefield monitoring, traffic supervision and space detection. In the case of traditional centralized state estimation, there are great limitations, and distributed state estimation shows vigorous development. Distributed state estimation gets rid of the traditional estimation center, and distributes state estimation to each sensor node independently. At present, distributed filtering mainly adopts the principle of consistency, and each sensor node can use the measur...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H21/00H04W4/38
CPCH03H21/0043H04W4/38Y02D30/70
Inventor 张皓周雪王祝萍陈启军
Owner TONGJI UNIV