Spatial Characteristic Estimation Method Based on Fast Marching Method

A spatial characteristic and fast technology, applied in transmission monitoring, network planning, electrical components, etc., can solve the problems of inability to detect object distribution, inability to extract environmental channels, inability to provide planning and positioning work, etc., to achieve the effect of improving communication accuracy

Inactive Publication Date: 2015-08-19
重庆米诺米特太赫兹技术有限公司
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Problems solved by technology

[0005] However, simple path extraction cannot detect the specific object distribution in the environment, cannot extract the real environment channel, cannot estimate the spatial characteristics of the environment channel model, and cannot provide specific information for subsequent specific planning and positioning work. Information

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  • Spatial Characteristic Estimation Method Based on Fast Marching Method
  • Spatial Characteristic Estimation Method Based on Fast Marching Method
  • Spatial Characteristic Estimation Method Based on Fast Marching Method

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Embodiment Construction

[0029] In order to detect the existing complex environment and establish an environment model, the present invention proposes a method for estimating space characteristics by applying the fast-moving method to the complex environment. This method uses the idea of ​​FMM to improve the simple estimation of the path by the existing FMM, and applies the idea to the estimation of the environmental channel model, and effectively obtains the specific environmental parameters through the estimation of the spatial characteristics.

[0030] In the following, the present invention will be described in detail by detailing a preferred specific embodiment of two-dimensional planar environment estimation in conjunction with the accompanying drawings; it should be understood that the preferred embodiment is only for illustrating the present invention, and cannot be used to limit the protection of the present invention scope.

[0031] The realization process of the estimation of the channel mo...

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Abstract

The invention relates to the technical field of wireless communication and particularly relates to a spatial characteristic estimation method based on a fast marching method. A signal transmitting source transmits a signal, a signal receiving node receives the signal, and the signal receiving node analyzes the received signal and extracts real transit time between the signal transmitting source and the signal receiving node. The fastest marching path between the transmitting source and the receiving node is searched in a coordinate system with the use of the fast marching method, simulation transit time between the transmitting source and the receiving node is calculated, and meanwhile, the simulation transit time is approached to the real transit time through iteration of an algebraic reconstruction method so as to obtain the spatial characteristics of each coordinate point on the fastest marching path. According to the invention, by making use of the ideas of the fast marching method, estimation and planning of a fast path in an environment are realized, and moreover, the spatial characteristics of a path are estimated by making full use of relevant TOF and speed distribution information acquired in path estimation so as to obtain an environment model, thus improving the accuracy of estimation on communication situation in an unknown environment.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for estimating spatial characteristics based on a Fast Marching Method (FMM for short). Background technique [0002] With the rapid development of wireless technology and mobile communication devices, people have more and more needs for understanding environmental information in complex environments, not just satisfied with simple "black box" environmental processing methods such as fingerprint technology, but It is necessary to estimate the environment propagation channel model specifically, the location information in the environment requires more accuracy, and the extraction of channel impulse response CIR has more accuracy, etc. Since buildings, glass walls and other structures in complex environments will produce serious delay fading, which will lead to multipath effects, affect the accurate collection and analysis of signals and the developm...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/391H04W16/18G06F9/455H04W24/06
Inventor 陈国平王文珊王丽
Owner 重庆米诺米特太赫兹技术有限公司
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