用于全息近场定位的波数域虚拟阵列
Wavenumber-Domain Virtual Arrays for Holographic Near-Field Localization
浏览论文内容
中文总结 AI 辅助
本文针对全息孔径的近场定位问题，提出基于波数域虚拟阵列的方法，利用可逆编码与嵌套模式选择，仅需数十个RF链即可实现全孔径分辨率的多目标单基地定位。
中文摘要 AI 辅助
研究了通过波数域模式工作的全息孔径对多个点目标的单基地定位问题。镜面点条件界定了作为近场近似的频谱模型的有效性。单次快照观测到的投影维度最多为目标数量乘以极化分量，而可逆编码可恢复完整信道，并将解码后的数据置于发射与接收波数的差格上。秩条件解决了可识别性问题，费舍尔矩阵简化为格上的协方差，决定了嵌套模式选择，仅需数十个射频（RF）链即可达到全孔径分辨率。
英文摘要
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.
