Coherent Detection of Radar Returns of Unknown Doppler Shift.
The presentation of a solution to the problem of detection by phase-coherent techniques of radar returns of unknown Doppler shift, a problem that has been approached by various approximate methods for several years. In addition to the solution of the problem, the Memorandum contains a discussion of these earlier approaches and the circumstances in which they are useful. A discussion of the filter design, as well as the mathematical derivation of the desired filter operation, is included. The filter is also suitable for sequential detection, a field that is growing in potential value with the advent of phased array radars