4. Signal processing

Measurement of the radio-frequency communication channel, including echoes induced by cooperative targets, provides a sequence of complex values, classically named $I$ and $Q$ for the identity and quadrature quantities. These quantities are classically converted into modulus $\sqrt{I^{2} + Q^{2}}$ and phase

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Signal processing

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Sensitivity principle : accessible quantities

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Sources bibliographiques

(1) - STOCKMAN (H.) - Communication by means of reflected power . - Proceedings of the IRE, 36(10) : p. 1196-1204 (1948).
(2) - GLINSKY (A.) - Theremin : ether music and espionage . -...

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