This paper proposes an efficient scheme to reduce the pre-correlation bandwidth effect in the global navigation satellite system (GNSS) receiver filtering process. It is mainly based on the application of a spectral transformation to the satellite-emitted signal that effectively reduces its band. At the receiver's end, this operation causes the spreading of noise over a much wider band than that used by the radio frequency stage. Consequently, the resulting auto-correlation function in the acquisition process acquires properties that enhance considerably the performance of the receiver in the presence of the multipath and noise disturbing phenomena. The simulation results demonstrate that the proposed method is a plausible solution for both multipath and noise problems in the GNSS applications for any limited value of the pre-correlation bandwidth in the receiver filter.

中文翻译：

---

基于频谱变换的技术，用于在存在噪声和多径的情况下降低 GNSS 接收器滤波器中有限预相关带宽的影响

本文提出了一种有效的方案，以减少全球导航卫星系统 (GNSS) 接收机滤波过程中的预相关带宽效应。它主要基于对卫星发射信号应用频谱变换，有效地减少其频带。在接收器端，此操作导致噪声在比射频级使用的频带宽得多的频带上传播。因此，在捕获过程中产生的自相关函数获得了在存在多径和噪声干扰现象的情况下显着提高接收机性能的特性。