Improved Methods for Frequency Measurement of Short Radar Pulses

A method for measuring the frequency of short radar pulses is presented. In our experiment, two frequency synthesizers were used as a signal source, a double balanced mixer as a phase detector and a fast sampling oscilloscope (1 Gs/s) was used for data acquisition/display. Therefore our method is relative in nature. Since this method is based on waveform measurements, also even shorter pulses and their frequency deviations can be measured or at least detected and evaluated. In our test setup, 18 ns pulses can be produced. A waveform of such short pulses cannot be measured using a conventional oscilloscope, but a dedicated high-speed sampling device.