CERTAIN FEATURES OF AN AUTOMATIC COORDINATE PLOTTING DEVICE USING A BINARY-QUANTIZED SIGNAL STORAGE UNIT,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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The paper deals essentially with the radar-computer interface problem that is, the use in radar systems of digital computers for information processing and the associated need for a primary processing automatic coordinate plotting unit for interference purging and true return discrimination. Preliminary quantizing of the signal is shown to result in a number of special circumstances in the digital processing procedure since both delay-line processing systems as well as the multi-channel variety in which the number of channels equals the number of discrete range elements give rise to considerable storage redundancy. One of the primary aims of the paper is to show how, by eliminating this redundancy, sizeable reductions in equipment volume can often be achieved. An analysis is made of the particular features of the digital handling of binary-quantized radar signals in the coupling system of a circular-scan radar and computer, wherein it is demonstrated that the number of channels in the multi-channel primary reduction system may be significantly less than the number of discrete range elements. A method is suggested for calculating the required number of channels, and the characteristics of a detection system with independent stand-by channels are described.
- Active and Passive Radar Detection and Equipment