Computation apparatus for the phase of a complex signal expressed by its in-phase and quadrature components, and application to a radar signal

摘要

Device for computing the phase angle PHI of a complex signal, in particular of a radar signal defined by its two bipolar video components, I and Q. Digitally operating device comprising means (6) of computing the modulus of each component, I and Q, followed by means (7) of computing the logarithm of these moduli, these logarithmic signals then being subtracted from one another in a circuit (8) delivering an item of information which is code-converted in a circuit (9) delivering the phase angle PHI . Application to a Doppler radar. IMAGE