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《Acta Armamentarii》 2002-01
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TWO IMPROVED DOPPLER CENTROID ESTIMATION TECHNIQUES IN IMAGING THROUGH DOPPLER BEAM SHARPENING

Sun Hongbo Gu Hong Su Weimin Liu Guosui (Research Center of Electronic Engineering Technology,Nanjing University of Science and Technology, Nanjing, 210094)  
Doppler centroid estimation is one of the most important steps in the DBS imaging of airborne pulse Doppler radars. Under the condition that marked inertial navigation units(INU) measurement errors do exist, two new Doppler centroid estimation techniques in frequency domain and time domain were proposed. The new algorithm obviates the effects of non homogeneity in sight and fluctuations of echoes, and the precision of estimation is improved significantly. These algorithms are applied to some radar data, and results of imaging proved their effectiveness.
【Fund】: 国防科技重点实验室基金资助项目 (99JS0 1.4.1.DZ2 40 1)
【CateGory Index】: TN957
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