Target Detection Method Before Tracking based on Particle Filter

infrared dim target detection and tracking technology is one of the core technologies in infrared imaging system, and also a hot research topic. When the SNR is low, the tracking technique has a unique advantage. This paper studies the algorithm of track before detect based on particle filter, gives the basic theory of particle filter and its improved algorithm, and through the simulation of the particle filter technology examples, results show the superior performance in nonlinear and non particle filter under the background of Gauss.