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UDC 621.391

RESEARCH OF OBJECTS DETECTION ALGORITHM IN RADIOMETRIC POSITIONING SYSTEM

S. M. Gudkov, post-graduate student, RSREU, design engineer JSC «RRK», Ryazan; This email address is being protected from spambots. You need JavaScript enabled to view it.

An algorithm for detecting moving objects in the positioning system of several spatially distributed radiometers is considered. Radiometers synchronously scan the area of space, changing the position of the line of sight of the antenna along the azimuth and elevation angle. The result of scanning are matrixes of radiothermal image of several objects that undergo segmentation operations. Each segment is represented by a vector of parameters - the angular coordinates of object's sight in the center of the object, average radio brightness temperature and geometric invariants. The algorithm classifies vectors according to their belonging to certain objects and determines the trajectories of their movement in the sequence of scan cycles. The aim of the work – is to study the characteristics of the algorithm, depending on the conditions of objects observation by computer simulation. Based on the results of the study, a series of dependencies were constructed reflecting such properties of the algorithm as the probability of detecting all objects, the accuracy of determining their coordinates, the resistance to the influence of measure errores and noises in the form of false segments, not belonging to objects.

Key words: radiometric system, positioning, object detection, spatial coordinatesestimation, trajectory parameters, modeling

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