Robust Space-Time Anti-jamming Algorithm For Satellite Navigation System And Its Implementation

Due to the complication of the electromagnetic environment and the increase of the hostile artificial interference, anti-jamming has become one of the essential techniques in a satellite navigation receiver system. Nowadays, the anti-jamming approaches available include single-domain and multi-domain processing, such as time domain, frequency domain, spatial domain, and space-time domain and so on. In practical applications, however, the performance of the techniques degrades seriously, especially in the case of amplitude-phase error. For the performance degradation of anti-jamming due to the amplitude-phase error, two robust methods for the anti-jamming using space-time adaptive processing, applied in satellite navigation, are proposed, and also are analyzed by computer simulations. And the performances of the two methods are compared to that of the space and space-time processing algorithms. Simulation results are given to show the effectiveness and superiority of the proposed methods. Finally, Combined with some projection, the hardware system frame design and the detailed work flow of the anti-jamming processor, used for GPS navigation systems, are completed. From the view of Digital signal processor, the hardware implementation for the amplitude-phase error correction, space and space-time anti-jamming are given. The measured data are analyzed, and the problems, which are encountered in the debugging process, and the methods, how to solve, are given.