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