Publication detail

Time and sample rate synchronization of RTL-SDR using a GPS receiver

KADERKA, J. URBANEC, T.

Original Title

Time and sample rate synchronization of RTL-SDR using a GPS receiver

Type

conference paper

Language

English

Original Abstract

GPS receivers provide very precise Pulse Per Second (PPS) signal. A simple low cost method of time synchronization for RTL-SDR receivers using such GPS time signal is described. The PPS signal is injected into an IF stage of the RTL-SDR and detected by correlation of an expected signal shape and the measured data. The accuracy of such pulse detection algorithm is in the worst case 5 samples or up to 2.1 µs when using highest useful receiver sample rate of 2.4 MS/s. The algorithm can also be used to measure RTL-SDR oscillator offset with a very high precision for frequency corrections. The accuracy achieved is not enough for precise localization of ground targets, but it's sufficient enough to roughly estimate a location of an aircraft or a satellite

Keywords

RTL-SDR; time synchronization; GPS; TDOA

Authors

KADERKA, J.; URBANEC, T.

Released

15. 4. 2020

ISBN

978-1-7281-6469-4

Book

2020 30th International Conference Radioelektronika (RADIOELEKTRONIKA)

Pages from

100

Pages to

103

Pages count

4

BibTex

@inproceedings{BUT163940,
  author="Jakub {Kaderka} and Tomáš {Urbanec}",
  title="Time and sample rate synchronization of RTL-SDR using a GPS receiver",
  booktitle="2020 30th International Conference Radioelektronika (RADIOELEKTRONIKA)",
  year="2020",
  pages="100--103",
  doi="10.1109/RADIOELEKTRONIKA49387.2020.9092398",
  isbn="978-1-7281-6469-4"
}