Interference Suppression at Cooperative Use of GPS, GLONASS, GALILEO, BEIDOU

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Abstract
In this paper, the interference suppression method for GPS, GLONASS, GALILEO, and BEIDOU signals using the adaptive antenna array is considered. The model of the adaptive antenna array is demonstrated. The model includes 3D radiation pattern, elements that control the signal amplitude and signal phase, linear signal adder. The adaptation equation that allows solving the task by suppression of interference from the given direction is presented. The process of interference suppression using the real data received by 33 satellites is analyzed. It is shown that when interference suppression, the signals from some satellites are below the acceptable threshold. These signals are not used for solving a navigation task. The presented study is illustrated with diagrams and spatial adaptive antenna array patterns.

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