An overview of the effects of out‐of‐band interference on GNSS receivers
An overview of the effects of out‐of‐band interference on GNSS receivers
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带外干扰对 GNSS 接收机影响的概述
DOI：
10.1002/navi.345
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
A. Van Dierendonck
中科院分区：
文献类型：
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作者：
C. Hegarty;Dan Bobyn;J. Grabowski;A. Van Dierendonck
本文件论述了带外干扰干扰干扰全球导航卫星系统接收器功能的各种机制。这些机制包括：前端低噪声放大器、混频器和其他电路的饱和和减敏;由于接收机不能生成完美的音调以下变频所需信号的事实而产生的互易混频效应;互调产物;在滤波到接收机的通带中之后剩余的带外发射的混叠;以及由于干扰系统的信号生成和滤波中的缺陷而总是存在的带内（到GNSS）发射的接收。这些机制进行了详细描述，并为每一个缓解方法提供。
This paper addresses the wide range of mechanisms through which out-of-band interference can disrupt the functioning of GNSS receivers. These mechanisms include: saturation and desensitization of front-end low noise amplifiers, mixers and other circuitry; reciprocal mixing effects that arise from the fact that receivers cannot generate a perfect tone to downconvert the desired signals; intermodulation products; aliasing of out-of-band emissions that remain after filtering into the receiver’s passband; and the reception of in-band (to GNSS) emissions that are always present due to imperfections in the signal generation and filtering of the interfering system. These mechanisms are described in detail and mitigation approaches for each are provided.