Monopulse radio receiver compensation apparatus

摘要

In a monopulse radar receiver especially having off-boresite processing for a multiple target capability, there is included apparatus for compensating the receiver derived centroid and extent related signals for post hybrid interchannel imbalances in accordance with system parameter states. Generally, there is included in the sum and difference channel pairs of a monopulse radar receiver, attenuators which are operative in a plurality of attenuation states wherein a different error in the centroid and extent related signals may be rendered for each attenuation state. The compensating apparatus included in the receiver derives compensating signals for each of the attenuation states and stores the derived signals for use in compensating the centroid and extent related signals computed under mutually related attentuation conditions. Some monopulse radars additionally include carrier frequency diversity wherein a different error may be imposed on the centroid and extent related signals due to the post hybrid computations of the plurality of carrier frequencies. Consequently, the compensating apparatus, for these cases, further includes a means for deriving compensating signals associated with each of the carrier frequencies of the plurality which may be stored in another memory or memory section for compensating the centroid and extent related signals computed in the receiver in accordance with the carrier frequencies mutually associated therewith.