Report ITU-R SM.2355-2
Policy on Intellectual Property Right (IPR)
1 Introduction
2 Detection of weak signals
2.1 Locked-in amplifier
2.2 Correlation
2.2.1 Cross-correlation
2.2.2 Auto-correlation
2.3 Higher Order Statistics (HOS)
2.4 Cyclostationarity
2.5 Adaptive noise cancelling
2.6 Summary
3 Co-frequency signal separation
3.1 Single-channel separation (Strong-signal recovery)
3.2 Multi-channel separation (Spatial spectrum based beam-forming)
3.3 Summary
4 Multi-mode location (based on a combination of location technologies)
4.1 Angle of arrival
4.2 Time difference of arrival
4.3 Frequency difference of arrival
4.4 Power of arrival
4.5 ID-Aided
4.6 Summary
5 Conclusion
Annex 1 Examples of the application of advanced monitoring techniques
A1.1 Correlation application in satellite interference finding
A1.2 Strong-signal recovery application in satellite monitoring
A1.3 Single-channel ICA application for signal separation
A1.4 Spatial spectrum based beam-forming in HF/VHF monitoring
A1.5 Multi-channel ICA application for signal separation
A1.5.1 Details of tests
A1.5.2 Test results
A1.5.3 Interference detection processing
A1.6 GSM base station geolocation
A1.7 Use of small-satellites for spectrum monitoring
A1.7.1 Introduction
A1.7.2 Satellite-based monitoring architecture
A1.7.3 Application scenario
Annex 2 Examples of the application of combined geolocation
A2.1 Hybrid AOA/TDOA
A2.2 Hybrid TDOA/GROA
A2.2.1 Introduction
A2.2.2 Architecture of grid monitoring network
A2.2.3 System functionalities
A2.2.4 Conclusion
List of abbreviations