http://iet.metastore.ingenta.com
1887

## On-board interference detection and localization for satellite communication

• Author(s):
• DOI:

$16.00 (plus tax if applicable) ##### Buy Knowledge Pack 10 chapters for$120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:

Satellite Communications in the 5G Era — Recommend this title to your library

## Thank you

Interference is identified as a critical issue for satellite communication (SATCOM) systems and services. There is a growing concern in the satellite industry to manage and mitigate interference efficiently. In this context, an on-board spectrum monitoring and localization unit can be used to detect and localize the interference reliably. Current satellite spectrum monitoring and localization units are deployed on the ground, and the introduction of an in-orbit spectrum monitoring and localization unit can bring several benefits, e.g., simplifying the ground-based station in multibeam systems. This chapter presents the interference detection and localization techniques which take place on-board the satellite within a digital transparent processor (DTP) satellite payload or in a partially regenerative satellite. First, the conventional energy detector (CED) is presented, which is an efficient technique to monitor strong interference in SATCOMs. However, weak interference is not so easily detectable because of its low interference-to-signal-plus-noise ratio (ISNR). To address this issue, a second detector is discussed, which exploits the frame structure and pilot symbols of the SATCOM standards. Assuming that the pilot signal is known at the receiver, it can be removed from the total received signal, and then, an ED technique can be applied on the remaining signal to decide on the presence or absence of interference. Nevertheless, the detection at low values of ISNR may require more samples than the number of pilots supported by the standards. For this reason, a third detector is introduced by demodulating the desired signal, removing it from the total received signal and applying an ED in the remaining signal for the detection of interference. After detecting the interference, the interferer needs to be localized and, hence, this chapter describes the current techniques for on-ground interference localization and presents an on-board interference localization technique using frequency of arrival (FoA) via a single satellite.

Chapter Contents:

• 14.1 Introduction
• 14.2 On-board digitization
• 14.3 Satellite interference
• 14.3.1 Intrasystem interference
• 14.3.2 External interference
• 14.4 Interference detection techniques
• 14.4.1 Conventional energy detector
• 14.4.2 Energy detector with imperfect signal cancellation in the pilot domain
• 14.4.3 Energy detector with imperfect signal cancellation in the data domain
• 14.4.3.1 Probability of false alarm for QPSK signals
• 14.5 Current localization techniques
• 14.6 Interference localization using frequency of arrival via a single satellite
• 14.7 Localization algorithm and solution
• 14.8 Numerical results
• 14.8.1 Performance analysis of interference detection techniques
• 14.8.2 Performance analysis of interference localization techniques
• 14.9 Conclusion
• References

Inspec keywords:

Preview this chapter:

On-board interference detection and localization for satellite communication, Page 1 of 2

| /docserver/preview/fulltext/books/te/pbte079e/PBTE079E_ch14-1.gif /docserver/preview/fulltext/books/te/pbte079e/PBTE079E_ch14-2.gif

### Related content

content/books/10.1049/pbte079e_ch14
pub_keyword,iet_inspecKeyword,pub_concept
6
6
This is a required field