Abstract: A control system for a cannon-launched projectile carrying explosive squibs is shown to comprise: (a) a first control computer, responsive to the range and bearing of a selected ground target, to compute an ideal ballistic trajectory between an artillery piece and such target and to calculate the line of sight between the artillery piece and points on such trajectory; (b) an infrared beam generator and scanner for scanning, under the control of a first clock, such beam in a predetermined pattern centered on the calculated line of sight; (c) a sensor carried on the cannon-launched projectile for detecting when the infrared beam irradiates such projectile; a second clock on the cannon-launched projectile operating synchronously with the first clock to indicate the position of the infrared beam when the cannon-launched projectile is irradiated; and (d), a firing controller for selecting and firing one, or more, explosive squibs to force the cannon-launched projectile toward the ideal ballistic trajectory.

Abstract: A method is disclosed to measure the range and altitude of a radio frequency signal jamming source carried on an airborne platform, signals from such source traveling to a pair of airborne observation points over a direct path and an indirect path, such method including the steps of, before operation, assuming different altitudes for each one of the airborne observation points, calculating and storing sets of numbers representing lines of position characterizing selected values of the difference, dR, between the lengths of the direct and indirect paths, and then, in operation, measuring dR to derive an address indicating the particular one of the stored sets of numbers describing the actual line of position from each observation point to the signal source, triangulating to determine the actual location of the signal source on the actual line of position and displaying the range and altitude of the signal source.

Abstract: A solid state transmitter/receiver operating at 94 GHz is shown to comprise an injection-locked pulsed oscillator for transmitting interrogating pulses and a first local oscillator for heterodyning with received signals to produce an intermediate frequency (I.F.) signal, both such oscillators being phase-locked to a master oscillator operating at a frequency below 94 GHz.

Abstract: Circuitry for controlling a phase-lock loop using a charge-pump phase detector is shown to comprise a phase detector network in combination with an operational amplifier connected to selected output signals from such network to produce a bipolar D.C. signal indicative of the phase difference between signals applied to such network, one of the signals being at a frequency half that of the other.