Experimental Approach to Estimate Cross-Eye Gain for a Nonretrodirective Cross-Eye Jamming System

An experimental approach to estimate cross-eye gain for a nonretrodirective cross-eye jamming (NRCJ) system is presented. Cross-eye gain is used as an index to evaluate the cross-eye jamming system. The previous experimental method for obtaining the cross-eye gain using a network analyzer is accurate but requires a complex configuration. In this letter, a method of estimating the cross-eye gain for the NRCJ system by the signal power difference using a spectrum analyzer is proposed. To verify the proposed method, a prototype of the NRCJ system was fabricated. The experimental results showed that the proposed method could estimate the cross-eye gain with a phase-difference error of approximately 2° compared to the simulation.