The multi-beam receiver is also uniquely suited for resolving one of the nagging problems of modern radio-telescopy: screening out radio frequency interference (RFI).
Land levelling project designed for much suited for planting or other using by navvy work according to specific conditions and standards is the base of the project.
This paper presents and proves a discriminant theorem which is suited to examine the determinability of the discrete linear system,which shows that an outstanding issue of this field has been solved.