Advanced Cepstral Filtering - Introduction to Imaging from Scattered Fields - page 166

table 10.14 A Comparison of Reconstructed Images for a Circular Target with Radius λ Using the Born Approximation, and
Processing Sources Independently and Recombining in Cepstrum Space

number of Receivers

incident
Frequency (GHz)

180 120 90 72 60 45 40

8

6

5

4

3

Note: Thirty-six sources are used with varying numbers of receivers equally and spaced to show the effects of aliasing after the number of receivers drops below the aliasing
limit. Green indicates above the aliasing limit, yellow indicates at the threshold of the aliasing limit, and red indicates below the aliasing limit. Green square, receiver
spacing less than lambda; yellow square, receiver spacing equal to or slightly greater than lambda; red square, receiver spacing greater than lambda.