Particle Filter of Track-before-detect with Radar Weak Target

Track-before-detect is a powerful technique for detection and tracking of targets with low signal-to-noise ratio.Particle filter has unique advantages in tracking problem of nonlinear and non-Gaussian.The particle filter and TBD technique are introduced,the model of PF-TBD algorithm is presented,and the performances of detect and track effected by SNR is analyzed based on MATLAB simulation result.