Direction-of-arrival estimation and mutual coupling calibration method and system with arbitrary sensor geometry and unknown mutual coupling
US11245464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2020 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Jul 17, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/336
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The direction-of-arrival estimation and mutual coupling calibration method and system with arbitrary sensor geometry and unknown mutual moupling are disclosed, a direction-of-arrival estimation and mutual coupling calibration method with arbitrary sensor geometry and unknown mutual moupling, comprising the following steps: acquiring an array signal, and then estimating a covariance matrix according to the array signal, a noise subspace is obtained by eigendecomposition of the covariance matrix; determining the angle search range of DOA, and generating a group of grids according to the angle search range of DOA, based on the noise subspace and the mutual coupling matrix between the elements, and obtaining a spectrum function corresponding to each grid; Estimating DOA based on the peak value of spectrum function corresponding to each grid, and obtaining the mutual coupling coefficient between the array elements from the DOA. The DOA estimation and mutual coupling calibration of arbitrary array manifold under the condition of mutual coupling are realized simply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.