CONTENTS

Policy on Intellectual Property Right (IPR)
 1 Summary
 2 Introduction
 3 ATD network basics
        3.1 ATD network service area
        3.2 ATD network detection output data
        3.3 Lightning detection method basics
4 ATD outstations
        4.1 Outstation configuration
        4.2 Sensor unit
                  4.2.1 Starloc II GPS and rubidium unit
                  4.2.2 Signal acquisition card and counter/timing card
                  4.2.3 Summary of technical characteristics of ATD stations
        4.3 Outstation functions
                  4.3.1 Signal processing
                  4.3.2 Digital processing
                  4.3.3 Waveform reporting
 5 Flash location processor functions
        5.1 Overview of wave form processing
        5.2 Wave form extraction
        5.3 Selection of reference station
        5.4 Spectral corrections
        5.5 Time difference extraction
        5.6 Principles of flash location
 6 Characterization of interference
        6.1 Impact of interference
        6.2 Examples of interference received at various ATD network outstations are shown in Figs 9 and 10
        6.3 An example of intermittent interference emanating from Norway and received at Lerwick, Keflavik and Camborne
 7 Interference mitigation
        7.1 Limits to usefulness of notch filters