Keywords: Precision Timebase, Harmonic Crystals.

Abstract: Two crystal oscillators are configured as a "plug-and-play" precision transmit-receive clock that requires no calibration during manufacture. This timebase can be used to clock equivalent time radar, laser, and TDR ranging systems with picosecond accuracy.

Applications include automotive backup and collision warning radars, precision radar rangefinders for fluid level sensing and robotics, and universal object/obstacle detection and ranging.