Particle filtering methods are widely applied in sequential state estimation within nonlinear non-Gaussian state space model. However, the traditional particle filtering methods suffer the weight degeneracy in the high-dimensional state space model. Currently, there are many methods to improve the performance of particle filtering in high-dimensional state space model. Among these, the more advanced method is to construct the Sequential Makov chian Monte Carlo (SMCMC) framework by implementing the Composite Metropolis-Hasting (MH) Kernel. In this paper, we proposed to discrete the Zig-Zag Sampler and apply the Zig-Zag Sampler in the refinement stage of the Composite MH Kernel within the SMCMC framework which is implemented the invertible particle flow in the joint draw stage. We evaluate the performance of proposed method through numerical experiments of the challenging complex high-dimensional filtering examples. Nemurical experiments show that in high-dimensional state estimation examples, the proposed method improves estimation accuracy and increases the acceptance ratio compared with state-of-the-art filtering methods.
翻译:粒子过滤方法在非线性非加苏西州空间模型中广泛应用于连续状态估算。然而,传统的粒子过滤方法在高维状态空间模型中受到重量降解的影响。目前,有许多方法可以改进高维状态空间模型中粒子过滤的性能。其中,较先进的方法是通过实施复合大都会-哈斯丁(MH)核心内尔(MH)框架来构建“SMCMC”框架。在本文中,我们建议使用Zig-Zag采样器,并在SMCMC框架内将Zig-Zag采样器应用到合成MH Kernel的精细阶段,在联合抽取阶段实施不可倒的粒子流。我们通过对具有挑战性的复杂高维过滤实例进行数字实验来评估拟议方法的性能。神经实验表明,在高维度估算示例中,拟议方法提高了估算的准确性,并增加了与状态过滤方法相比的接受率。