CONTENTS

Policy on Intellectual Property Right (IPR)
�1���� Introduction
������� 1.1���� Definition and characteristics of radio frequency interference
������� 1.2���� Characteristics of astronomical signals
������� 1.3���� Dealing with radio frequency interference
������� 1.4���� ITU Standards
������� 1.5���� Adoption of mitigation methods
������� 1.6���� Effective observing techniques
�2���� RFI mitigation methodology � Layers of mitigation
�3���� Techniques for mitigating RFI
�4���� Pro-active measures � Changing the RFI environment
������� 4.1���� Regulatory and coordination measures
������� 4.2���� Local measures
������� 4.3���� Pre-detection & post-detection measures
�5���� Spatial excision (nulling)
������� 5.1���� Multi-antenna systems
������ 5.2���� Subspace projections
������� 5.3���� Post-correlation beamforming
������� 5.4���� Reference antennas and reference beams
�6���� Waveform subtraction
�7���� Anti-coincidence methods
�8���� Temporal excision (blanking and flagging)
������� 8.1���� Temporal blanking
������� 8.2���� Antenna-based digital processing
������� 8.3���� Digital excision at correlation
������� 8.4���� Post-correlation � Before or during imaging
�9���� Implementation at the telescopes � A strategy
10���� Conclusions