Modern Global Navigation Satellite System (GNSS) receivers have to withstand significant levels of interference in order to operate under harsh conditions, such as in the presence of jamming and of other Radio Frequency (RF) threats. A possibility is to implement pre‐correlation interference mitigation techniques that operate directly on the samples provided by the receiver front‐end. This paper provides an assessment of five interference mitigation techniques at the measurement and position level. The analysis focuses on the Adaptive Notch Filter (ANF) and on four Robust Interference Mitigation (RIM) techniques. Several data collections were performed in the presence of jamming, and the data collected were used for the analysis that shows that RIM techniques do not introduce biases at both the measurement and position level. While the ANF delays pseudorange measurements, the biases introduced are predominantly common to all the observations with a negligible impact on a Single Point Positioning (SPP) solution.

中文翻译：

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缓解GNSS干扰：测量和位置域评估

现代全球导航卫星系统（GNSS）接收机必须承受较大的干扰水平，才能在恶劣的条件下运行，例如在存在干扰和其他射频（RF）威胁的情况下。一种可能是实施直接在接收机前端提供的样本上运行的预相关干扰缓解技术。本文提供了在测量和位置级别对五种干扰缓解技术的评估。分析重点放在自适应陷波滤波器（ANF）和四种鲁棒干扰缓解（RIM）技术上。在存在干扰的情况下执行了几次数据收集，收集到的数据用于分析，结果表明RIM技术不会在测量和位置级别引入偏差。