Predicted Microwave Electro-Magnetic Backscattering Returns for Simple Reflective Targets.
Abstract
The problem of identifying the perfectly conducting sphere and the perfectly conducting, infinitely thin circular disk via the backscattered far field from the object with known a incident signal is examined. A method utilizing synthetic aperture radar principles to obtain slant range versus cross range image plots of the discrete point scatterers on an object is discussed. A computer program to calculate the far field backscattering from the sphere is developed. Another computer program, found in the literature, which calculates the far field backscattering from the infinitely thin circular disk, is extended for ka > or = 15. In the above programs, the backscattering is obtained as a function of frequency and treated as the frequency response of a linear system. The input to this system is 5 cycles of 10 GHz R-F. The return signal is the output of the system and is obtained by using conventional linear system theory. Since a sphere is symmetric, the same return is obtained at all aspect angles. This return is examined. However, returns from the circular disk are different at different aspect angles. These returns from the disk are examined. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1979
- Accession Number
- ADA080367
Entities
People
- Frank Dibartolomeo Jr
Organizations
- Air Force Institute of Technology