The Research On Real-time Multi-task Of Integrated Navigation System Based On ARM

Integrated Navigation System has the specialty of high precision, good reliability and small volume. It is one of the development directions of modern navigation system. Modern navigation is a technique that related to exact mechanism, microelectronics, computer, communication, automatic control, optics, and other many branches of science. It is not only very important in the field of national defense, but also widely used in the fields of civil navigation.Due to the development of computer and auto-control, the real-time system also be applied to aviation, spaceflight and navigation widely. Real-time scheduling is the industry and military. The mostly work of the paper is summarized as follows:1. According to the characteristic of the real-time system, real-time scheduling is researched from theory deeply, and given the parameter of evaluation of the real-time scheduling algorithm, which is applied to the real Integrated Navigation System.2. A software structure based on real-time multitask is analyzed here. And according to its functions and data flow, the software of Integrated Navigation System is divided into several tasks with different priorities, and has been developed based on VxWorks, which is an embedded real-time multitask operation system. Using this software reliability, real-time and operation efficiency of navigation software, hence can meet the needs of the development of modern navigation system.3. Some module of the Integrated Navigation System is tested, and the Real-time validation of the system, reliability and stability are all testified here.