Three-dimensional co-prime cubic array direction-of-arrival estimation method based on a cross-correlation tensor
US11879986B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2021 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Oct 1, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/46
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure discloses a three-dimensional co-prime cubic array direction-of-arrival estimation method based on a cross-correlation tensor, mainly solving the problems of multi-dimensional signal structured information loss and Nyquist mismatch in existing methods and comprising the following implementing steps: constructing a three-dimensional co-prime cubic array; carrying out tensor modeling on a receiving signal of the three-dimensional co-prime cubic array; calculating six-dimensional second-order cross-correlation tensor statistics; deducing a three-dimensional virtual uniform cubic array equivalent signal tensor based on cross-correlation tensor dimension merging transformation; constructing a four-dimensional virtual domain signal tensor based on mirror image augmentation of the three-dimensional virtual uniform cubic array; constructing a signal and noise subspace in a Kronecker product form through virtual domain signal tensor decomposition; and acquiring a direction-of-arrival estimation result based on three-dimensional spatial spectrum search.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.