A Precision Range Delay Unit

In order to achieve satisfactory analyses of missile performance, it was necessary to obtain a range delay circuit with greater accuracy than was possible with the Meacham circuit employed in the Mark 12 and other fire control radars. This report describes a precision range unit which has an overall accuracy of plus minus 10 yards in 100,000 and permits pulse-time modulation of the PRF by any time function. The principles of its operation are discussed and performance data are tabulated and analyzed.