捷联惯性组合导航系统的工程设计

The Project Design of the Inertia Integrated Navigation System

为适应组合导航计算机系统的微型化、高性能度的要求,拓宽导航计算机的应用领域,文中设计了一种基于PC104和可编程逻辑阵列器件协同合作的导航计算机系统。系统主要包括数据采集模块和数据解算模块两部分,给出了PC104与FPGA的片内接收模块进行通信的设计方案。为提高FPGA与工控机之间的数据传输速度,设计了通过共享双端口RAM的方式,实现了工控机与FPGA之间的高速数据交换。从硬件结构和软件设计方面说明了系统各模块的功能以及模块间的通信。

To meet the need of the integrated navigation computer＇s minimization and high performance so as to expand its applications, this paper designs an integrated navigation system based a PC104 and FPGA. The naviga- tion computer system includes a data acquisition module and a data decoding module. The design for PC104 to transmit data to dual-port RAM in FPGA is proposed. In order to improve the data communication speed between FPGA and the industrial computer, a method for realizing data exchange through dual-port RAM is designed. The functions of and communication between modules are introduced from the aspects of the hardware structure and software design.