Yes, this problem can be "patched." There had existed for years a software patch, called the "ZC150 patch," that made it so the radar sort boxes could be stratified. With stratification, radar B would be assigned as preferred coverage at a set altitude and above for the sort box encompassing radar A, whereas below that altitude there would exist double-preferred coverage in that same sort box. Therefore, in some cases we may have double targets, but not in the majority of cases as would be with double-preferred adaptation without stratification.
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