Path fading and non-line-of-sight (NLOS) signals constitute serious problems in the wireless localization process. These problems cause unpredictable degradation in the localization precision. In this paper, a novel wireless localization approach, which is based on twice receiving array signal spectra fusions and asymmetric second-order stochastic resonance (ASSR) networks, is proposed. By combining and repetitively processing the above two techniques, the receiving signal-to-noise ratio (SNR) can be enhanced. Additionally, the receiving array signal without the line-of-sight (LOS) component can be determined and removed from the spectra fusion process. The theoretical analyses presented verify the unbiasedness and asymptotic efficiency of the proposed twice receiving spectra fusion approach. Computer simulations demonstrate that the fused spectra can significantly improve the wireless localization precision compared with conventional and up-to-date localization methods, especially under low SNR conditions.

中文翻译：

---

一种使用两次接收阵列光谱融合和ASSR网络的新型无线定位方法

路径衰落和非视距（NLOS）信号在无线定位过程中构成了严重的问题。这些问题导致定位精度的不可预测的下降。本文提出了一种新颖的无线定位方法，该方法基于两次接收阵列信号频谱融合和不对称二阶随机共振（ASSR）网络。通过组合并重复处理以上两种技术，可以增强接收信噪比（SNR）。此外，可以确定没有视线（LOS）分量的接收阵列信号，并将其从频谱融合过程中删除。提出的理论分析验证了所提出的两次接收频谱融合方法的无偏性和渐近​​效率。