Title: High resolution sector scan radar

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Abstract: A high resolution, azimuth sector scan radar is provided with sinusoidal operation to establish time sequencing of the radar main bang signal with the horizontal and vertical deflection signals of the video display and the antenna azimuth sweep. A high frequency master oscillator provides a fundamental sinusoidal signal to establish the pulse repetition rate of the radar main bang signal, while phase shift networks provide phase shifting of this signal to produce variable time delayed sinusoidal signals for the vertical deflection excitation and video unblanking of a CRT, to permit the display of selected range segments within the maximum range of the system. A submultiple frequency of the fundamental pulse repetition frequency signal, is synchronized with this signal and is used through similar phase shifting functions to provide video unblanking for the azimuth component of the display, horizontal deflection excitation for the CRT, and synchronization of the radar system and the radar antenna azimuth drive. The radar system features the use of simplified circuitry to produce the control timing, CRT deflection signals, and antenna azimuth sweep synchronization, to provide a system having small size and weight characteristics and being suitable for airborne use.


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