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Bistatic MIMO radar angle estimation method based on four-linear decomposition

A bistatic and radar technology, used in radio wave measurement systems, instruments, etc., can solve problems of high complexity

Inactive Publication Date: 2018-09-28
YANGTZE UNIVERSITY
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Problems solved by technology

However, the complexity of parameter estimation in the context of big snapshots is still high for existing PARAFAC algorithms

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  • Bistatic MIMO radar angle estimation method based on four-linear decomposition
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  • Bistatic MIMO radar angle estimation method based on four-linear decomposition

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[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the invention.

[0023] The present invention provides a method for estimating an angle of a bistatic MIMO radar based on four-linear decomposition, wherein the method for estimating an angle of a bistatic MIMO radar based on four-linear decomposition includes the following steps:

[0024] S1. Perform matched filter processing on the received array data, estimate the covariance matrix of the received data, and construct a fourth-order tensor model of the covariance matrix;

[0025] S2. Initialize the receiving direction matrix, the transmitting direction matrix, and the target covariance matrix, and in...

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Abstract

The invention discloses a bistatic MIMO radar angle estimation method based on four-linear decomposition. According to the method, a covariance matrix of received data is estimated through utilizing the multidimensional structure of array signals, and a fourth-order tensor model of the covariance matrix is constructed; a receiving direction matrix, a transmitting direction matrix and a target covariance matrix are initialized into a unit matrix; the receiving direction matrix, the transmitting direction matrix and the target covariance matrix are iteratively calculated through utilizing the alternating least squares method till the convergence condition is met; and lastly, DOD and DOA of a target are estimated through the least squares method. Compared with a traditional algorithm, no additional calibration sources, singular value decomposition and spectral peak search are needed, the estimated DOD and DOA can be automatically matched, accuracy of parameter estimation is higher than the ESPRIT algorithm and the HOSVD algorithm, and complexity is lower than the PARAFA C algorithm.

Description

technical field [0001] The invention relates to a radar signal processing technology, in particular to a bistatic MIMO radar angle estimation method based on four-linear decomposition. Background technique [0002] With the progress and development of the times, multiple-input multiple-output (MIMO) technology has also achieved great success and breakthroughs in the communication field, and this technology has attracted widespread attention in the radar field. The core content of MIMO radar technology is to use multiple sets of mutually orthogonal signals to irradiate the target, and the receiving antenna receives the target echo signal and performs matching filtering on it, so as to obtain the estimation of the target's spatial position and other parameters. Compared with traditional phased array radar technology, MIMO radar has higher accuracy in estimating target parameters. For now, it is a very hot academic topic discussed internationally. The research is not only of g...

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Application Information

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IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 王子怡文方青武磊王可张磊
Owner YANGTZE UNIVERSITY
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