A simplified estimate of sanguine performance

An analysis of possible performance of an assumed version of the Project Sanguine system has been made. The results are compared with those reported by Biggs and by a Lincoln Laboratory-Navy group, and qualitative agreement is indicated with the latter computations, provided appropriate assumptions are made. Assumptions made here include a sharply bounded ionosphere, antenna input resistance the same as for a completely-buried, well-grounded insulated wire, and earth conductivities of mhos/m. Limitation of performance is presumed due to atmospheric noise, and appropriate assumptions are made for such noise. Use of clipping to achieve significant signal-to-noise ratio improvement is also assumed. Although the results indicate feasibility of a Sanguine-type system, verification of appropriate conductivity values to use and of the effects of ionospheric variations will probably require further experimentation.