Wavenumber-Domain Virtual Arrays for Holographic Near-Field Localization

Monostatic localization of multiple point targets is studied for a holographic aperture operated through wavenumber-domain modes. A specular-point condition delimits the validity of the spectral model as a near-field approximation. A single snapshot observes a projection of dimension at most the target count times the polarization components, while invertible coding recovers the full channel and places the decoded data on the difference lattice of transmit and receive wavenumbers. Rank conditions settle identifiability, and the Fisher matrix reduces to a covariance over the lattice, dictating a nested mode selection that attains full-aperture resolution with only tens of RF chains.

Source: arXiv:2608.09910v1 - http://arxiv.org/abs/2608.09910v1 PDF: https://arxiv.org/pdf/2608.09910v1 Original Link: http://arxiv.org/abs/2608.09910v1