Channel Consistency Indexes of Satellite Navigation Antenna Arrays Receivers

摘要

Channel mismatch has become a serious limit to further improve the anti-jamming performance on satellite navigation antenna arrays receivers. Consistency degree of each channel could directly determine the anti-jamming performance. In order to analyze and confirm the channel consistency indexes, this paper analyzes the impact of channel mismatch on interference cancellation ratio (ICR), firstly. According to the anti-jamming processing based on power inversion, a method to analyze the consistency indexes is proposed. Simulation experiments show that the difference between theory and simulation value on ICR is less than 0.1dB, when the antenna arrays are equipped with two elements and the channel mismatch degree is random. When channel mismatch is restrained by the proposed channel consistency indexes, the difference between demand and simulation value on ICR is less than 5dB.