Self-cross Phase Calibration Method of Oversized Front Distributed Phased Array Radar

For an oversized front distributed phased-array radar, the conventional phased-array radar calibration algorithm cannot be applied. Hence, this paper presents a combination of self- and cross-calibration algorithms. For the oversized front distributed phased-array radar, the error sources are analyzed, and the error model is established. Then, the self- and cross-calibration techniques and their principles are presented. In addition, this method is extended to the phased-array radar from units. Finally, we conducted self-intersecting phase calibration simulation experiments, and the results show that the algorithm can significantly improve the sidelobe level of the oversized front distributed phased-array radar.