A discussion of a possible method for detecting nuclear bursts in space. The method is based on the effects that the bursts should have on the phase and amplitude of high-frequency radio transmission between separated terminals on the earth's surface. Relations are derived that show how these effects should vary with time after the nuclear detonation and how they are related to bomb temperature, yield, and distance from the earth. It is concluded that measurements of high-frequency phase and amplitude change, in conjunction with very-low-frequency phase measurements, may provide a very sensitive means for detecting nuclear bursts in space by ground-based radio equipment, even for quite cool bombs. The possibility of determining bomb temperature is also shown.
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