Study on tracking before detecting method based onFastICA for weak radar target
基于FastICA的雷达弱目标检测前跟踪方法研究

This paper studied weak radar target's detecting and tracking problems with the disturbance by strong noise. Aiming at independence between signals and noise, this paper proposed one method of TBD based on FastICA for weak target. The key points of the method was to dispute energy to signals after blind source separation BSS, and solved a designed multi-objective programming approach problem so as to achieve the energy accumulation of coincident echo wave. Simulation results show that in the case of negative signal to noise ratio SNR the proposed method can detect and track target well either it is Gaussian noise or non-Gaussian noise. Furthermore, used status information recorded during process of energy accumulation as the observed values, and then target would be stably tracked by filter estimation methods, which provided one new way for tracking and detecting technology of weak target.