Archives ‘Depository articles’

V. E. SAVANEVICH, A. M. KOZHUKHOV, A. B. BRYUKHOVETSKIY, E. N. DIKOV

Asteroid’s track detection and estimation of track’s parameters / / V. E. Savanevich, A. M. Kozhukhov, A. B. Bryukhovetskiy, E. N. Dikov, V. N. Tkachov // Radioelektronika i informatika. 2011. N 1 (52). P. 015-021

The decision rule (DR) of amplitude and coordinate detection for collection of marks, which probably belongs one object with nonzero proper motion on frames’ series, is developed. DR has extended for nonzero undetection probability of asteroid’s mark on frames’ series. Decision making about asteroid detection has made only for tracks, which estimation of velocity modulus outnumber the given value of minimal asteroid’s velocity. The method has used by authors in developed system of automatic online new asteroids detection and known asteroids tracking CoLiTec. The results of method application is presented.

V. E. SAVANEVICH, A. B. BRYUKHOVETSKIY, A. M. KOZHUKHOV, V. P. VLASENKO

The method of CCD-frames’ stacking with signal’s accumulation from a faint asteroid with nonzero apparent motion on series of CCD-frames / V. E. Savanevich, A. B. Bryukhovetskiy, A. M. Kozhukhov, V P. Vlasenko

Keywords: asteroid, accumulation of asteroid’s signal, CCD-frames’ stacking.

V. E. SAVANEVICH, A. B. BRYUKHOVETSKIY, A. M. KOZHUKHOV, E. N. DIKOV

Estimation of asteroid’s equatorial coordinates according to its coordinates on CCD-frame / V. E. Savanevich, A. B. Bryukhovetskiy, A. M. Kozhukhov, E. N. Dikov // Syst. Obr. Inf.. 2010. N 6(87). P. 172—179.

The developed method represents estimation of asteroid’s equatorial coordinates according to its coordinates on CCD-frame. It considers dependence of errors in equatorial coordinates’ estimation upon apparent brightness of reference stars. The present method also implements uniform choice of reference stars on the image that helps to increase accuracy of estimation. The method’s efficiency has been proven through experimental researches on the natural data. Its precision considerations have been preliminary defined. The present method is used by authors in development of automatic detection system for new and already known asteroids’ tracking.

Keywords: asteroid, estimation of equatorial coordinates, CCD-frame.

V. E. SAVANEVICH, A. B. BRYUKHOVETSKIY, A. M. KOZHUKHOV, V. P. VLASENKO

Estimation of asteroid’s apparent brightness by the amplitude of its signal on CCD-frame / V. E. Savanevich, A. B. Bryukhovetskiy, A. M. Kozhukhov, V P. Vlasenko // Syst. Upr. Nav. ta. Zvy’azku, 2010. N 3(15). P. 46—50.

The developed method represents estimation of asteroid’s apparent brightness by the amplitude of its signal on CCD-frame, based on two-ranges piecewise linear model of photometric solution. The method’s efficiency has been proven through experimental researches on the natural data. Its precision considerations have been preliminary defined. The present method is used by authors in development of automatic detection system for new and already known asteroids’ tracking.

Keywords: asteroid, estimation of apparent brightness, photometry, CCD-frame.

V. E. SAVANEVICH, A. B. BRYUKHOVETSKIY, A. M. KOZHUKHOV, E. N. DIKOV

Estimation of asteroid’s coordinates on the discrete image/ V. E. Savanevich, A. B. Bryukhovetskiy, A. M. Kozhukhov, E. N. Dikov // Radioengineering. All-Urk. Sci. Interdep. Mag. 2010. N 162. P. 78—86.

The described method represents estimation of asteroid’s coordinates on the discrete image, considering estimation of continuous parameters (asteroids’ coordinates) on the discrete image (set of CCD-matrix pixels’ potentials) and the fact that residual noise photons can be unevenly distributed on an object’s image. The method’s efficiency has been proven through experimental researches on the natural data. Its precision considerations have been preliminary defined. The present method is used by authors in development of automatic detection system for new and already known asteroids’ tracking.

V. E. SAVANEVICH, A. B. BRYUKHOVETSKIY, A. M. KOZHUKHOV,A S. SYROVATKA

Preselection of celestial objects’ signals on CCD-image/V. E. Savanevich, A. M. Kozhukhov, A. B. Bryukhovetskiy // Systems of arms and military equipment. – Kharkiv: KHUAF, 2011. Vol. 2(26). P. 169—173.

The developed method represents preselection of celestial objects’ signals during asteroids’ detection. It is based on comparison of thresholds with spatial convolution values of the received radiation around the image’s peak and the form of the expected signal. The new suggested model permits distribution of spatial convolution values. It represents a mixture of normal distribution law and “tail”, situated in area of large values of spatial convolution. Approximate selection of a normal (“base-line”) component of distribution of spatial convolution values through the present method is used to determine rejection threshold for image’s peaks that have no celestial objects’ signals around. The present method is used by authors in development of automatic detection system for new and already known asteroids’ tracking.