Abstract
The article describes the computer model of an adaptive digital antenna array. We considered in detail its features and specifications. The results of experimental research methods beamforming digital adaptive antenna array using a computer model. We studied four methods of providing independent beams forming the directivity pattern, calibration of the receiving channels, interference suppression and measurement navigation parameters.
Highlights
At present, modern radio electronic devices are increasingly equipped with adaptive antenna arrays with digital control
The computer model simulates the operation of an adaptive digital antenna array and allows: - conduct spatial filtering of received useful signals from interference; - to investigate the influence of the amplitude-frequency and phase-frequency characteristics of the receiving paths on the quality of the received signals; - assess the accuracy of measuring navigation parameters
The program allows you to conduct research and analysis: - the level of the side lobes of the antenna pattern for different types of amplitude-phase distributions; - the depth of the formation of dips in the antenna pattern for spatial filtering of interference; - influence of heterogeneity of the group delay time in the measurement accuracy of navigation parameters and the level of noise reduction; - the influence of the ratio of the power of useful signals to the power of interference and internal noise on the accuracy of measuring navigation parameters; - the accuracy of measuring navigation parameters depending on the direction of reception of useful signals under interference conditions; - the amount of error introduced by the delay tracking circuit
Summary
Modern radio electronic devices are increasingly equipped with adaptive antenna arrays with digital control. The results of experimental research methods beamforming digital adaptive antenna array using a computer model.
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