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A digital Synthetic Aperture Radar (SAR) simulator of ground moving targets is presented. Real scene data is used as the clutter background for fidelity and moving targets are real-time computed and embedded into scene data in time domain according to pulse repetition frequency (PRF). The experimental results prove the effectiveness of the system.
The particle swarm optimizer algorithm (PSO) is a recently developed evolutionary search technique, In order to improve the precision of range alignment in ISAR data processing, a new method is presented based on particle swarm optimizer. The range profile distance is used as fitness function in PSO searching motion parameters, which evaluate each individual based on target range profiles, in such...
The multi-input multi-output synthetic aperture radar (MIMO-SAR) is an innovative concept, which can bring high degrees of freedom for SAR system with limited transmitting/ receiving (T/R) elements. In this paper, ground moving target indication (GMTI) for MIMO-SAR is studied based on reasonable usage of the space-time equivalent samplings. Furthermore, this paper gives a deep insight of the azimuth...
The imaging simulation of SAR (synthetic aperture radar) is very useful for designing and understanding SAR systems. In this paper, a fast image simulating algorithm of SAR for complex three-dimensional ground object targets is presented. The simulation parameters and echo signal expression of SAR system are presented. In the simulation testing, the imaging of a complex three-dimensional ground object...
Based on the statistical property of the range migration (RM) in the synthetic aperture radar (SAR) range compressed range-Doppler (RD) domain, a Doppler centroid estimation method for SAR is proposed. The method can mitigate the partial aperture effect (PAE) which seriously degrades the estimation accuracy of the traditional Doppler estimators for high contrast scenes. Experimental results with real...
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