Abstract
This paper presents an analysis of the feasibility of using a modified Capon algorithm for signal arrival angle estimation in a MIMO (Multiple-Input-Multiple-Output) monostatic radar. A comprehensive analysis of the state of the art in signal arrival angle estimation algorithms used in many fields of technology, not only in radiolocation, has been carried out. The methodology of simulation studies preparing the newly implemented algorithm for operation in a radar system is presented. A change from the traditional Capon algorithm was proposed in that instead of inverting the entire covariance matrix of the received data, only the upper triangular matrix R formed by decomposing the QR of the covariance matrix of the received data into the orthogonal matrix Q and the upper triangular matrix R was subjected to the inversion operation. The presented research is a comprehensive view on adaptation of angle of arrival estimation algorithms in various fields of technology, which so far has been presented in a selective manner or does not necessarily take into account all technical aspects that have a significant influence on the application of the developed algorithm in real systems. The idea of using signal arrival angle estimation algorithms and the influence of signal to noise ratio on the quality of object detection are presented. The presented results of simulation studies confirm the validity of the proposed approach to signal arrival angle estimation algorithms in MIMO monostatic radar.
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