The effect of phantom-bit technology on the performance of phased array seeker detection in the case of the initial beam angle

In order to study the effect of a phased array radar seeker with phantom-bit technology for missile detection and guidance, according to the principle of antenna element shift phase, both the antenna element shift phase law and the causes of beam pointing error under phantom-bit conditions are analyzed, and an antenna beam propagation model is established. The antenna pattern is derived and the sub-array and synthesized factor pattern expression are established, based on the space-vector relationship. The scanning sub-array has an effect on quantization sidelobes, this is analyzed when the initial antenna scanning angle is present. The simulation results show phantom-bit technology can cause beam pointing error, the sub-array zero position nearly coincides with the synthesized factor grating lobe position due to the sub-array scanning, which can't lead to oversized quantization sidelobe electrical levels increment.