Feasibility study on scaled bistatic RCS measurements of aircraft in W-band to investigate misguidance by the Instrument-Landing-System

In this paper a measurement technique is presented, which allows the derivation of scaled bistatic radar cross sections of objects at ILS frequencies with a very simple measurement setup and an easy post processing procedure. Its functionality is proven with simple reference objects, which can be calculated by common simulation tools. First sets of bistatic RCS are presented for the large aircraft A380 and B747. With a wider span of the observation angle and a more sophisticated measurement setup, enhancing RCS measurements within only one plane to a three dimensional observation area, it becomes feasible to measure the bistatic RCS profile, that is necessary to investigate ILS disturbances for a complete landing approach at decreasing height of aircraft. Additionally, the use of focusing lenses can improve the measurement dynamics and accuracy and is of interest for further investigations.