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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
The highest frequency a RTL2832U-based SDR can reach is apparently 2.2GHz. (https://osmocom.org/projects/rtl-sdr/wiki) But if you are willing to do some programming, take a look at https://github.com/pavels/spektrum. Maybe you can port it to a different SDR.
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