Patent ID: 6958725

Claim:
A radome aberration correcting system comprising a directional antenna system for tracking a target, a radome enclosing said antenna system, said radome having a profile discontinuity, means for deriving information from the antenna system as to the apparent line of sight of a target, said apparent line of sight having two error components, a first of said error components arising from the presence of said discontinuity and being frequency dependent, and the second of said error components arising from basic refraction and being dependent upon the angle off-boresight of the target line of sight and independent of frequency, first storage means containing data representing a range of magnitude of said first error component predetermined empirically, second storage means containing data representing a range of magnitude of said second error component predetermined empirically, means for providing a first addressing signal to said first storage means, said first addressing signal being a product function of the operating frequency and the angle off-boresight of the apparent line of sight, means for correcting the apparent line of sight in dependence upon the data in said first storage means accessed by said first addressing signal, means for applying a signal representing the apparent line of sight as a second addressing signal to said second storage means, and means for correcting the apparent line of sight in dependence upon the data in said second storage means accessed by said second addressing signal.