Signal Structure of the Starlink Ku-Band Downlink

Paper Details

Authors	Todd E. Humphreys, Peter A. Iannucci, Zacharias M. Komodromos, Andrew M. Graff
Pulbication	IEEE Transactions on Aerospace and Electronic Systems
doi	10.1109/TAES.2023.3268610

Abstract

We develop a technique for blind signal identification of the Starlink downlink signal in the 10.7 to 12.7 GHz band and present a detailed picture of the signal’s structure. Importantly, the signal characterization offered herein includes the exact values of synchronization sequences embedded in the signal that can be exploited to produce pseudorange measurements. Such an understanding of the signal is essential to emerging efforts that seek to dual-purpose Starlink signals for positioning, navigation, and timing, despite their being designed solely for broadband Internet provision.

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Summary

General Thoughts

Starlink uses OFDM

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Annotations

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Red	Aim to Improve
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Green	Aim to replicate
Blue	Further Reading

• “Instead, a more comprehensive Doppler model is required, consisting of both a frequency shift and compression/dilation of the baseband signal.” Page 3
  • doppler
  • This might be important to us as well. After this quote the reason to extend the doppler model can be found.