RADAR OPERATING IN WAVE MAINTAINED CAPABLE OF PERFORMING DISTANCE MEASUREMENTS

Abstract

Abstract Translated from French L'INVENTION CONCERNE LES RADARS EMETTANT DES ONDES ENTRETENUES MODULEES EN FREQUENCE. DANS UN RADAR DE CE TYPE, ON APPLIQUE LES SIGNAUX RECUS, FOURNIS PAR UN MELANGEUR COMPLEXE 47I, 47Q A UN CONVERTISSEUR ANALOGIQUENUMERIQUE 55 QUI ATTAQUE UN CORRELATEUR NUMERIQUE 63. CE DERNIER RECOIT EGALEMENT DES SIGNAUX RETARDES DIFFEREMMENT QUI REPRESENTENT UN SIGNAL MODULANT QUI EST APPLIQUE DE FACON REPETITIVE AUX SIGNAUX EMIS. LES SIGNAUX DE SORTIE DU CORRELATEUR SONT TRAITES POUR DETERMINER LEUR SPECTRE DE FREQUENCE QUI EST REPRESENTATIF DE LA DISTANCE DE LA CIBLE. APPLICATION A LA NAVIGATION AERIENNE. THE INVENTION RELATES TO RADARS EMITTING FREQUENCY MODULATED SUSTAINED WAVES. IN A RADAR OF THIS TYPE, THE SIGNALS RECEIVED, PROVIDED BY A COMPLEX MIXER 47I, 47Q, ARE APPLIED TO AN ANALOG-TO-DIGITAL CONVERTER 55 WHICH ATTACKS A DIGITAL CORRELATOR 63. THIS LATTER ALSO RECEIVES DELAYED SIGNALS DIFFERENTLY THAT REPRESENT A MODULIC SIGNAL REPETITIVE WAY TO THE SIGNALS ISSUED. THE CORRELATOR OUTPUT SIGNALS ARE PROCESSED TO DETERMINE THEIR FREQUENCY SPECTRUM THAT IS REPRESENTATIVE OF THE TARGET DISTANCE. APPLICATION TO AIR NAVIGATION.

Inventors

• 👤 John D Collins

Bibliographic Details