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在相控阵各幅射元移相值具有奇对称特性时,只要计算阵面中半数幅射元的移相值,得出正码和其反码,并将正、反码驱动对应的移相器,即可获得波束的偏移。使用正反码驱动可以节省一半以上的计算量和存储量。文中讨论了在不使用和使用虚位技术时用正反码驱动引起的指向误差,并示出正反码驱动引起的指向误差与虚位引起的指向误差其符号相反,相互起补偿作用。
When the phase shift values of phased array elements have odd symmetry characteristics, as long as the phase shift values of half of the radix elements in the matrix are calculated, the positive code and its inverse code are obtained and the corresponding positive and negative code drives are shifted Phase, you can get the beam offset. Using positive and negative code driver can save more than half of the amount of computation and storage. In this paper, we discuss the pointing errors caused by the positive and negative codes when the imaginary bit technology is not used and the pointing errors caused by the positive and negative code driving and the pointing errors caused by the imaginary bits are opposite.