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Event-triggered IQ Inspection for Low-cost SDR H I Observations in an RFI-rich Urban Environment

Authors: Zi-Qi Li, Peng-Yu Li, Yao-Yu Han, Chen-Xu Guan, Yu-Tong Fan

Zi-Qi Li et al 2026 Research Notes of the AAS 10 .

Provider: AAS Journals

Caption: Figure 1.

(a) example H I dynamic spectrum or integrated spectrum from the SDR observation, with persistent RFI peaks marked. (b) short IQ-mode time–frequency view of a triggered RFI event, showing communication-like waveform structure that is not visible in the integrated spectrum. (c) Event-triggered workflow.

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