A Bistatic Method for Radar Cross Section Measurements in the Fresnel Region

摘要

Fresnel region radar cross section analysis becomes a reliable solution when far-field conditions are difficult to fulfil. An approximated analytical expression for the radar cross section is derived based on the field integration on the target surface by assuming a constant current distribution on the transmitting antenna. The influences of environment and impedance mismatch are considered, provided that the measurements are performed in a multipath environment. Our method was validated by simulation and measurements on a rectangular, metallic plate.