Singular values for a simulated interferometric experiment. The singular values are arranged in descending order. The baseline had equal polar and equatorial components. Twenty stars equally-spaced in declination between  + 30° and  + 90° were observed, and the delay was sampled uniformly over the full 360° hour angle range. One of the 23 singular values is significantly smaller than the rest, corresponding to a poorly constrained “direction” in solution space.