A pulsed crystal oscillator circuit for radar ranging

The paper describes a high-precision circuit for radar ranging which uses the now well-established method of controlling the range timing marker by means of a linear, continuous phase-shifting circuit. Its special features are the use of a pulsed quartz-crystal oscillator as the timing standard and the elimination of the separate, medium-precision timing circuit usually employed to select one range marker from the array potentially offered by the phase-shifting circuit. Appendices deal with some of the factors involved in the design of the circuit.