The CGR4 lightning sensor

摘要: The design of the CGR4 lightning sensor is based on several observed characteristics electric field changes caused by nearby lightning, and radiofrequency noise bursts from lightning. signals are detected a simple aerial, processed combination analogue digital circuitry under microprocessor control to determine if there flash, and, so, assign type flash as negative ground (NGF), positive (PGF), or cloud (CF). These types have distinctive features in their change waveforms, enabling an assignment be made obtaining measures waveform applying appropriate set rules. A method estimating sensor's effective range area has been developed using data for events. This involves recording variation with time, response sensor, distance thunder ranging. As able apply different threshold overall each detected, single 11.3 km (effective 400 km) all was achieved 520 volts per metre (V/m) CF, 760 V/m NGF, 1200 PGF. responds about 90 cent flashes at 8 km, 40 11 approaching zero above 16 km.