Vehicular Variable-Parameter METRRA System
Abstract
The report and instruction manual is intended to describe the Variable Parameter Metal Re-Radiating Radar (METRRA) System (hereafter designated as the VP METRRA), depict its performance, and provide operating and maintenance instructions. A METRRA system differs from conventional radar primarily in that the METRRA uses a third-harmonic return from a target while a conventional radar uses a return at the fundamental frequency. A conventional radar can obtain returns from undesired targets such as trees, water, etc. A METRRA radar is not affected by such clutter since it depends on nonlinear junctions, usually the result of fabrication processes, inherent in certain classes of man-made metallic structures. These nonlinear junctions receive transmitted energy and re-radiate harmonics of the transmitted frequency (intermodulation products are generated when more than one transmitter is radiating) which can be received by the METRRA receiving system.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1974
- Accession Number
- AD0782214
Entities
People
- R. F. Elsner
Organizations
- IIT Research Institute