METHOD OF SPACE RADAR SCANNING Russian patent published in 2017 - IPC G01S13/04 

FIELD: radar ranging.

SUBSTANCE: invention relates to radar engineering and can be used to design or upgrade rotating multifunctional radar systems with active phased antenna arrays (AFAA) with electronic scanning for scanning airspace. Said technical result is achieved due to fact, that the area of space scanning by azimuth is divided into sectors and in each of them both the mode of target search by wide-angle beam pattern on the elevation angle, and mode of tracking by narrow beam based on results of target detection in search mode are implemented, wherein the target search in each sector is carried out by electronic scanning beam pattern in azimuthal plane, during which antenna beam moves by azimuth faster than normal of the antenna array, and due to higher rate reaches the end of given azimuth sector before normal, time until the normal to antenna array reaches azimuth, corresponding to the end of this sector, is used for fast plotting of route for new targets detected when viewing the given sector in search mode, as well as for more accurate tracking of detected earlier and already on tracking high-speed and maneuvering targets, due to electronic beam tilting in reverse to direction of antenna rotation, provided that time, allotted for searching and tracking targets in each sector, is selected individually, taking into account the number of targets on tracking in each sector, route plotting is carried out by repeatedly directing beam at the point with coordinates, where upon viewing the current sector in search mode new target has been detected, and in case of approved detection, beam is directed at the same target in the third place, thereby ensuring route plotting for new target during short period of time. During target tracking one provides extrapolation of their position at the moment of treatment and directs beam in the extrapolated position, performing multiple treatment to target during the period of time when this target stays in this sector and thus providing more accurate measurement of their coordinates and velocity vector.

EFFECT: achieved technical result – continuous scanning of space and detection of targets while tracking them with reduced time of route plotting and increased accuracy of tracking high-speed and maneuvering targets at the absence of restrictions on the range in which AFAA is implemented.

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