Ω-k techniques advantages and weaker aspects

Wave equation techniques and the Ω-K algorithm are very attractive for future SAR space missions with on board reconstruction. The aim of the present work is to point out the stronger advantages and the weaker aspects of this algorithm compared to current SAR processors. Theoretical assumptions and approximations, practical limitations and drawbacks of the method will be outlined in contradistinction to its more positive aspects. A sensitivity analysis, with some positive conclusions, has also been performed. It will appear that there is no great revolution with regard to traditional algorithms and that the major problems and chief restrictions are always the same, as well as the unavoidable antagonism between processin speed and reconstruction precision, even if some secondary e B ects are more easily handled here.