Double-base MIMO radar angle estimating method based on cross-correlation matrixes

A technology of cross-correlation matrix and angle estimation, applied in the field of radar, can solve the problems of angle estimation that cannot be directly applied to bistatic MIMO radar, and limit the arrangement of arrays, so as to achieve the effect of high complexity, speeding up estimation speed, and avoiding large amount of computation.

Inactive Publication Date: 2014-04-30
XIDIAN UNIV
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Problems solved by technology

The estimation performance of this algorithm is better than that of the CCM-ESPRIT and JSVD algorithms, but the number of elements in the azimuth and elevation dimensions is limited, which greatly limits the array arrangement; in addition, the azimuth and elevation data re...

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  • Double-base MIMO radar angle estimating method based on cross-correlation matrixes
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  • Double-base MIMO radar angle estimating method based on cross-correlation matrixes

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[0028] The implementation steps and effects of the present invention will be further described below with reference to the accompanying drawings:

[0029] refer to figure 1 , the specific implementation steps of the present invention are as follows:

[0030] In step 1, the radar echo signal is matched and filtered to realize channel separation.

[0031] The radar system of the present invention is a bistatic radar, and the transmitting station and the receiving station are respectively composed of M and N array elements to form a uniform linear array whose array element spacing is half a wavelength, wherein M and N are integers greater than zero; each transmitting subarray Orthogonal signals with the same carrier frequency are transmitted, and the Doppler frequency has no effect on the signal orthogonality, and the distance between the target and the antenna is much larger than the distance between the transmitting and receiving antenna elements.

[0032] For P uncorrelated ...

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Abstract

The invention discloses a double-base MIMO radar angle estimating method based on cross-correlation matrixes. The method mainly solves that problem that a double-base MIMO radar angle is large in calculation and complex in computation. The achieving steps are as follows: (1) conducting matching and filtering on a radar echo signal, and forming data according to an emission array and a receiving array; (2) respectively constructing cross covariance matrixes by utilizing the formed data; (3) respectively obtaining rectangular projection operators in guide vector null space of the emission array and the receiving array through linear independence of a covariance matrix row vector; (4) obtaining the position of a target relative to the emission array and the receiving array; (5) respectively obtaining rectangular projection operators in guide vector null space of a synchronized array through linear independence of an autocorrelation covariance matrix row vector of the data after matching and filtration, and constructing a cost function for matching angles. The double-base MIMO radar angle estimating method based on cross-correlation matrixes achieves high-precision MIMO radar target angle estimation with small calculation and can be used for locating a target in a radar and communication.

Description

technical field [0001] The invention belongs to the technical field of radar, and in particular relates to a bistatic MIMO radar angle estimation method, which can be used for radar target parameter estimation and detection. Background technique [0002] The estimation of bistatic MIMO radar target relative to the position DOD of transmitting array and the position DOA of receiving array has aroused many scholars' research interest. Most of the research methods are based on eigendecomposition algorithms. For example, K.T.Wong et al. proposed a two-dimensional multiple signal classification algorithm MUSIC on pages 1235 to 1245 of IEEE Transaction On Antenna and Propagation, Volume 48, Issue 8. X. Zhang et al proposed a dimensionality reduction MUSIC algorithm on pages 1161 to 1163 of IEEE Communications Letters, Volume 14, Issue 12. The performance of these two algorithms is similar. Chen Duofang et al. proposed the ESPRIT algorithm for bistatic MIMO radar in Electronics ...

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Application Information

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IPC IPC(8): G01S7/41
CPCG01S3/143G01S13/003G01S13/06
Inventor 秦国栋武斌鲍丹蔡晶晶李鹏刘高高冯小平张葵
Owner XIDIAN UNIV
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