Abstract
AbstractIn highly dynamic scenes, beamforming can alleviate satellite signal attenuation and distortion caused by null widening. In this article, a beam steering scheme based on strapdown inertial navigation system (SINS) aid is proposed. Firstly, the Hermite interpolation algorithm is used to calculate satellite position coordinates to reduce the amount of calculation. On the other hand, the satellite position coordinates are converted to the antenna coordinate system, and the beam direction is calibrated based on the attitude angle measured by the SINS to ensure the optimal beam gain. Finally, the proposed scheme is verified through a simulation, and the influence of SINS measurement errors and interpolation errors on the beamforming performance is evaluated. The simulation results show that the proposed method can effectively improve and stabilize the signal‐to‐noise ratio and reduce the influence of anti‐interference processing on satellite signals close to the interference direction in dynamic scenes.
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