说明：  将扩展卡尔曼滤波器与slam相结合，详细描述了扩展卡尔曼滤波SLAM算法的流程。与优化SLAM相比，它具有精度高、逻辑简单等特点，适合初学者快速入门，
(Combining extended Kalman filter with slam, the flow chart of extended Kalman filter SLAM algorithm is described in detail. Compared with the optimized SLAM, it has the characteristics of high accuracy and simple logic. It is suitable for beginners to get started quickly.)