Comments, with reply, on ´A real-time high-resolution technique for angle-of-arrival estimation´ by J.P. Reilly

See ibid. vol.75, no.12, p.1692-4 (Dec. 1987). The commenters explain why they disagree with some assertions in the above-titled letter and point out some omissions that they consider important. In particular, they maintain the systolic array of W.M. Gentleman and H.T. Kung cannot be used for subspace estimation in high-resolution methods. The author points out some alternative interpretations that present the original work in a different light.