Observations of the Earth’s leakage radiation, observed at Arecibo as reflected from the Moon, are also presented. A model including over 2,000 television transmitters is used to demonstrate the wealth of astronomical and cultural information available from a distant observer’s careful monitoring of frequency and intensity variations in individual video carriers (program material is not taken to be detectable). The most detectable and useful escaping signals arise in a few ultra-powerful military radar systems and in normal television broad-casting. To understand better the information which might be derivable from radio leakage, the case of planet Earth is considered. In addition to searches for purposeful signals, those attempting interstellar communication should also consider the possibility of eavesdropping on radio emissions inadvertently “leaking” from other technical civilizations. Results: New theoretical recommendations for choosing the most effective methods to search the techno-signatures of extra-terrestrial civilizations are formulated.Ĭonclusion: Using the calculated amount of information embedded in the model, we showed that the most promising methods for finding potential residents in the Uni-verse should combine frequency radiation with thermal or electromagnetic quantities. Based on these formulas, the magnitude of the inevitable threshold of misunderstanding of two civilizations in the uni-verse is determined. This value, without additional assumptions, allows us to present a formula for calculating the comparative uncertainty of the model of any physical phenomenon. Methodology: To realize it, the number of dimensionless criteria contained in the International System of Units (SI) has been calculated.
Aims: The purpose of this work is to formulate the requirements for future methods of searching for extra-terrestrial civilizations by use of the concepts of information theory and the theoretically grounded method.
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