Method for calibrating coherent parameter emitted by distributed array coherent synthetic radars

The invention relates to a method for calibrating a coherent parameter emitted by distributed array coherent synthetic radars. The method comprises the steps that unit radar array faces are adjusted to be consistent, unit radar array face reference points are roughly located, the locating precision range meeting the directive gain requirement is calculated, proper locating estimating precision is selected according to rough locating precision, the locating errors of unit radars are estimated through an optimization algorithm, and finally calibration and weighting are carried out through the estimated value, emitting beams are formed, and the flow is shown like the figure 1. The method is suitable for the distributed array coherent synthetic radars, when the unit radars are densely distributed and measuring and locating precision is insufficient, array flow shape correction is carried out through a software method, the emitting coherent parameter is calibrated, and finally the emitting beams are formed.