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Angle estimation method based on conformal antenna array and Bayes network

A Bayesian network, conformal antenna array technology, applied in the field of angle estimation, to reduce the difficulty of estimation

Active Publication Date: 2019-01-11
BEIJING INST OF REMOTE SENSING EQUIP
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Problems solved by technology

But calculating the steering vector for a conformal antenna array is not as easy as for a line or area array

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  • Angle estimation method based on conformal antenna array and Bayes network
  • Angle estimation method based on conformal antenna array and Bayes network
  • Angle estimation method based on conformal antenna array and Bayes network

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Embodiment Construction

[0023] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. 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.

[0024] The present invention utilizes the Bayesian network to describe the corresponding relationship between the amplitude and phase information of the target radiation source received by the conformal antenna array and the angle of arrival, that is, the observation node X={X of the Bayesian network is used i :i=1,...,K} represents the scanning frequency f(t) of the conformal antenna array at any time t, the amplitude A(t) and phase of the target radiation source received by each channel The estimation node ...

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Abstract

The invention discloses an angle estimation method based on a conformal antenna array and a Bayes network. The method comprises the following steps: depicting a corresponding relation between target radiation source amplitude and phase information received by the conformal antenna array and an arrival angle by utilizing the Bayes network, representing a scanning frequency f(t) of the conformal antenna array at any time t, the target radiation source amplitude A(t) and phase as shown in description received by each channel by using observation nodes X={Xi: i=1,...,K} of the Bayes network, and representing a polarization way P(t), an azimuth angle alpha(t) and a pitching angle beta(t) of the target radiation source by using estimation nodes Y of the Bayes network.

Description

technical field [0001] The invention relates to an angle estimation method, in particular to an angle estimation method based on a conformal antenna array and a Bayesian network. Background technique [0002] Since the spatial position of the target will not change suddenly, so the arrival direction of the signal will not change suddenly. The target angle of arrival is the most effective, stable and reliable multi-target sorting parameter. [0003] At present, the methods for measuring the angle of arrival of the target radiation source signal mainly include the amplitude comparison method and the phase comparison method. With the maturity of digital receiving technology, higher precision and more flexible super-resolution direction finding technology can be used to estimate the angle of arrival of the target radiation source. [0004] The direction-finding system adopting the super-resolution direction-finding system is mainly composed of multi-element antenna array, multi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/14
CPCG01S3/14
Inventor 郭元元薛峰涛
Owner BEIJING INST OF REMOTE SENSING EQUIP
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