GPS-Disciplined Oscillator - May 2023 - Silicon Chip Online
The GPS-Disciplined Oscillator (GPSDO) is built almost entirely in software, so it only requires a PIC, an oven-conditioned crystal oscillator and a few other supporting parts. It provides an extremely accurate 10MHz signal with an error in the parts per billion range. by Alan Cashin
Marine Electronics Association Alan Cashin Disciplined Oscillator The Disciplined Oscillator Navigation Satellite System Based Frequency Reference
Source: siliconchip.com.au