Title :
Adaptive correction algorithm for radar-tracking images
Author :
Sytnik, O.V. ; Yefimov, V.B. ; Pustovoytenko, V.V.
Author_Institution :
A. Usikov Instn. of Radiophys. & Electron., Kharkov, Ukraine
Abstract :
The high-speed adaptive algorithm of the correction of radar-tracking images of the Earth surface is submitted. The algorithm based on the principle of extraction of the information on phase mistakes directly from a signal is fixed. The algorithm is designed for the correction of errors on travelling speed, acceleration and acceleration change speed. The estimation of support function is under construction proceeding from statistically authentic estimations of distribution of amplitudes of a Doppler signal spectrum. The choice of two-step-by-step recurrent procedure is caused by the necessity of the compromise between speed of convergence and volume of the calculations, falling one iteration. As practice has shown, application of such algorithm allows to raise amplitude of the response from reflectors on a surface up to 3 dB and to increase SAR resolution.
Keywords :
Doppler shift; radar imaging; radar tracking; statistical analysis; synthetic aperture radar; Doppler signal spectrum; Earth surface; SAR resolution; acceleration change speed; adaptive correction algorithm; amplitude distribution; high-speed adaptive algorithm; information extraction; radar-tracking image correction; support function estimation; two-step-by-step recurrent procedure; Approximation methods; Doppler effect; Electronic mail; Estimation; Polynomials; Synthetic aperture radar; Trajectory;
Conference_Titel :
Microwave and Telecommunication Technology (CriMiCo), 2013 23rd International Crimean Conference
Conference_Location :
Sevastopol
Print_ISBN :
978-966-335-395-1