Abstract:

According to the applications for current radio frequency simulation system (RFSS), a near-field error correction method using mono-pulse amplitude-comparison measure is proposed. This method produces two tables of nearfield error correction by adjusting the amplitudes on triad of antenna on the gradation direction to make the error of direction-of-arrival (DOA) approaching zero. Meanwhile, this method focuses on the model of mono-pulse amplitude-comparison for seeker setting a circular slot array of wave guide. Based on the character of symmetry for the slot array, the process of forming the SUM signal and MINUS signal is simplified. The precision of the tables for near-field error correction satisfies the demands of RFSS with the deflection for azimuth angle and elevation angle. The simplified method also meets the demand of RFSS and reduces the running time by 55%.