An Integrated Beam Anti-Jamming Algorithm for Low-Orbit Navigation Augmentation
Hao Wang, Qing Chang, Yong Xu
Abstract
Satellite-based and ground-based navigation augmentation can help improve the anti-jamming capability for the global navigation satellite system (GNSS). However, for array anti-jamming terminals, the enhanced signal may be mistakenly regarded as interference and suppressed. In order to avoid this problem, an integrated beam anti-jamming scheme is proposed in this letter, and an optimal interval of the constraint configuration is given. Based on the correlation coefficient of space vectors, the array anti-jamming method can be adapted to the scene with enhanced signals by configuring the constraint radius and constraint dimension properly. The simulation results show that the proposed scheme can effectively suppress interference and avoid signal loss when the signal-to-noise ratio (SNR) is greater than 0 dB and up to 20 dB.