High precision reference measurement technology for mechanical scanning radar

Abstract: Due to the change of array phase center at different times, traditional mechanical scanning radar's ability of measuring short range target decreases. By mapping the relative target position from array phase center to radar itself, the paper proposes a high-precision reference measurement technology for mechanical scanning radar, which effectively compensates the radar target measurement error caused by the change of array phase center. Besides, the paper deduces the influence of different system errors on measurement accuracy, gives the theoretical boundary of these errors, and verifies the effectiveness of the reference measurement technology through simulation and measured data. This technology can not only improve the target measurement accuracy, but also effectively improve the long-term coherent integration efficiency under the combination of phased-control array technology.