The maximum size of binary radar arrays (matrices) with only eight or
fewer rows has previously been determined, We determine the maximum si
ze of radar arrays containing 9-16 rows, and for those containing 17 r
ows we narrow the maximum size down to two values. We also give improv
ed upper and lower asymptotic bounds on the maximum size of radar arra
ys, which narrow the gap between the existing upper and lower asymptot
ic bounds by more than 25%.