Monopulse processing systems

Details Monopulse processing systems Monopulse processing systems

G - Physics

01

S

G01S 13/44 (2006.01) G01S 13/76 (2006.01)

Patent

CA 2086526

A secondary surveillance radar system in which monopulse processing (100) is used to obtain angle estimation of azimuth bearing, the improvement residing in a precision method; involving a monopulse qualifier signal (120), for identifying the maximum unambiguous off-boresight azimuth (OBA), while ensuring reduced sensitivity to Omni channel variations; the monopulse qualifier signal is developed from coherently combining the IF limited signals (110) derived from the Sum + jDelta and Delta + jSum signals (72, 74) such that two amplitude varying signals are created, such signals bearing a direct relationship to the Sum and Difference antenna pattern ratios and being independent of antenna signal power.

Système radar de surveillance secondaire dans lequel on utilise le traitement mono-impulsion (100) afin d'obtenir une estimation angulaire de l'azimuth, l'amélioration résidant dans un procédé de précision mettant en oeuvre un signal de qualification mono-impulsion (120), permettant d'identifier l'azimuth de dénivelé (AD) non ambigu maximum, tout en assurant une sensibilité réduite aux variations omnidirectionnelles de canaux; le signal de qualification mono-impulsion est développé à partir de la combinaison cohérente des signaux limités IF(110) dérivés des signaux (72, 74) de Somme + jDelta et Delta + jSomme de manière que deux signaux à variation d'amplitude sont créés, lesdits signaux ayant une relation directe avec les rapports de configuration d'antenne de Somme et de Différence et étant indépendants de la puissance des signaux d'antenne.

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