DME/TACAN对GNSS L5/E5a接收机的影响

Proceedings of the 2020 International Technical Meeting of The Institute of Navigation Pub Date : 2020-01-24 DOI:10.33012/2020.17207

A. Garcia‐Pena, C. Macabiau, O. Julien, M. Mabilleau, P. Durel

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引用次数: 6

摘要

GNSS L5/E5a干扰环境主要由DME/TACAN和JTIDS/MIDS脉冲主导，导致接收机观测到的有效C/N0下降。实现了一个时域消隐器来减轻它们的影响。RTCA DO-292提出了一种通过增加噪声PSD来计算接收到的有用信号的C/N0退化的模型。本文主要研究了DME/TACAN RFI信号的影响。给出了美国和欧洲情景的模拟结果和预测结果。预测结果由更新后的C/N0降解公式与RTCA DO292提出的公式进行计算。评估了GNSS接收机RFFE滤波器带宽和消隐阈值的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Impact of DME/TACAN on GNSS L5/E5a Receiver

GNSS L5/E5a interference environment is dominated by DME/TACAN and JTIDS/MIDS pulses causing a degradation of the effective C/N0 observed by the receiver. A time-domain blanker is implemented to mitigate their impact. RTCA DO-292 proposes a model to compute the C/N0 degradation of the received useful signal by the increase of the noise PSD. This paper focuses on the impact of DME/TACAN RFI signals. Simulated results as well as predicted results are presented for US and Europe scenarios. The predicted results are calculated from an updated C/N0 degradation formula with respect to RTCA DO292 proposed formula. The impact of GNSS receiver RFFE filter bandwidth and blanker threshold are evaluated.

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Proceedings of the 2020 International Technical Meeting of The Institute of Navigation

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