The Zero-Doppler Positioning System.
Wiebach,Wolfgang G. A., Barry L. Stann · Defense Technical Information Center (DTIC) · 1981
This report investigates a radio positioning system for forward artillery observers. The theoretical basis is derived, and implementation schemes are discussed. The preferred implementation is developed in detail and an experimental hardware model is described, giving performance specifications and circuit diagrams of the more important subassemblies. A program of simulated field tests of various degrees of complexity was carried out in the Washington, DC, area; their results are presented. (Author)