Using the LTE-Cell-Scanner to calibrate a SDR : r/RTLSDR
LTE Discovery (5G NR) - Apps on Google Play
GitHub - JiaoXianjun/LTE-Cell-Scanner: OpenCL, SDR, TDD/FDD LTE cell scanner, full stack from A/D samples to SIB ASN1 messages decoded in PDSCH, (optimized for RTL-SDR HACKRF and BladeRF board)