卡尔曼滤波器的主要功能就是目标跟踪，程序利用卡尔曼滤波器实现了对机动目标的跟踪-Kalman filter is the main function of target tracking, procedures for the use of a Kalman filter to achieve the right track moving targets

一个将GPS获得的经纬度坐标转换成北京54坐标的软件。-Get a GPS latitude and longitude coordinates will be converted into Beijing 54 coordinate software.