fade chart

fade chart

[′fād ‚chärt]
(electromagnetism)
Graph on which the null areas of an air-search radar antenna are plotted as an aid to estimating target altitude.
References in periodicals archive ?
Data recorded includes local and GMT dates and times precisely aligned to each occurrence, continuous main and diversity RF receiver signal level (RSL) fade chart recordings within +/-2 dB accuracy, all individual main and diversity receiver alarms, all 1+1 and 1:N receiver and transmitter switching events, and all DS1, E1, OC-3, STM-1, etc.