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One of the main reasons why ADS-B (Automatic Dependant Surveillance — Broadcast) has not been accepted as main source of surveillance information for Air Traffic Control (ATC) systems is its relative vulnerability against false target position reports. To remediate the issue, today's systems usually have independent surveillance system verifying the correctness of the ADS-B messages. This will make...
In this paper we propose an algorithm for 2D antenna array that can be used in ground surveillance systems. Due to the multipath propagation of signals robustness against imperfect knowledge about direction of arrival (DOA) is needed. We achieve the needed robustness by using two dimensional Slepian window functions. Although main interest of our research is surveillance, results of it may be also...
This paper investigates a robust adaptive beamforming technique for two dimensional antenna array. Robustness is needed against imperfect knowledge of desired signal direction of arrival as well as against other errors. Erroneous estimation of source direction is especially true in air surveillance systems because aircraft are moving in high speed. Need for two dimensional antenna arrays is also substantial...
Mode S or mode “select” is a sort for a data exchange protocol used for air surveillance purposes. In here “select” means that the radar addresses its interrogation to one particular aircraft instead of interrogation with all planes inside the main beam of the radar antenna. Because of high equipage of Mode S transponders, it has become one of the cornerstones of today's air surveillance used for...
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