William S. Helliwell

Motion estimation from SAR data

William S. Helliwell, 1995, Defense, Security, and Sensing.

Analysis of advantages and disadvantages of scene registration as part of space-time processing

Morton S. Farber, Cynthia C. Piotrowski, Stuart J. Hemple, 1996, Defense, Security, and Sensing.

Detector perturbation of ocean radiance measurements

Kenneth J. Voss, James Sanborn, William S. Helliwell, 1991, Optics & Photonics.

Ship shadowing: model and data comparisons

Kenneth J. Voss, William S. Helliwell, Burns Macdonald, 1990, Defense, Security, and Sensing.

An implicit method for three dimensional viscous flow with application to cones at angle of attack

William S. Helliwell, S. Lubard, W. S. Helliwell, 1975 .

Calculation of the Flow on a Cone at High Angle of Attack

William S. Helliwell, S. Lubard, W. S. Helliwell, 1973 .