Pseudo-Doppler Radio Direction Finder
Pseudo-doppler DF technique
The pseudo-doppler technique is a phase based DF method that produces a bearing estimate on the received signal by measuring the doppler shift induced on the signal by sampling around the elements of a circular array. The original method used a single antenna that physically moved in a circle but the modern approach uses a multi-antenna circular array with each antenna sampled in succession.
Flyer about SoundDoppler download
"SoundDoppler" a program of Lodewijk Baars PA3BNX, simulates doppler hardware.
Download SoundDoppler and MyMapping here and the SoundDoppler readme file here and MyMapping readme here
(PCB's and installation instructions are included in the .zip file)
Replaces the traditional doppler-decode-equipment by the soundcard. This program can also be used stand alone on stationairy doppler monitoring. You need a stereo-line-input on the soundcard. It requiers a sinus reference signal locked on the doppler-switcher. on the left-channel and demodulated FM-Rx-audio on the right-channel. It assume that the reference signal is between 300-2300 Hz.