Erratum to "Optimum two-dimensional uniform spatial sampling for microwave SAR-based NDE imaging systems" [Dec 11 3816-3815]

The radii in Fig. 4 in the above titled paper (ibid., vol. 60, no. 12, pp. 3806-3815, Dec. 2011), should be divided by two. Equations (10) and (13) should be edited as presented here.