Abstract
The results of digital beamform simulation, principles of processing and use of the obtained experimental data are presented. Methods were developed and an experimental setup was created for full- scale modeling and measurement of the characteristics of digital antenna systems with spatio-temporal signal processing at the Scientific and Production Center for Radio Information Metrology of the Moscow Aviation Institute (SPC RIM MAI).
Highlights
Digital antenna array (DAA) is an antenna system, which is a set of analog-digital channels in which the radiation pattern is formed in digital form, without phase shifters [1]
An experimental setup has been assembled in the antenna measuring and computing complex based on an anechoic chamber, which allows reproducing the process of digital diagram formation (Fig 1)
A radiator simulating a direction-finding target was installed in the far zone of a virtual receiving digital antenna array [5]
Summary
Digital antenna array (DAA) is an antenna system, which is a set of analog-digital channels in which the radiation pattern is formed in digital form, without phase shifters [1]. Modern technologies of DAA owe their massive development to the integration of digital signal processing processors with analog-to-digital and digital-to-analog converters within a single module [2]. The construction of DAA channels on such a basis makes it possible to unify procedures and hardware nodes of signal processing and simplifies their adaptation to a particular operating protocol. A key feature of the DAA is the digital beamforming of the radiation pattern of the antenna array. Full-scale modeling of digital diagram formation (DDF) processes, principles of processing and use of the obtained experimental results is the most important stage in the practical implementation of a new type of antenna systems - DAA
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