Real-time Processing Technology For The Optical Measurement System

Through deep research on the kernel structure of Windows operating system, software modules can be divided into different real-time priorities. Those tasks with high priority, such as data communication and processing, can be put on the kernel level of the OS as kernel mode driver. Those with low priority, such as system display and user interface, can be put on the user level as normal applications. This way, both real-time control and friendly user interface can be ensured, and the software features in clear structure, high modularization, high expansibility and maintainability.There are two issues in the Windows kernel real-time control: real-time hardware access and real-time network communication. Through designing kernel mode driver by Device Driver Kit (DDK), the problem of interrupt respond and hardware access has been resolved. Meanwhile, through analysis of system kernel network mechanism, stable network communication is achieved by kernel mode network communication technology.As the processing center of optics and electronics measure system, real-time control system computes target location real-timely by processing measure data from multiple stations, using arithmetic of two-station angles rendezvous locating, single-station locating, distance rendezvous locating, angle-distance united locating, etc. When several spare tracks to the same target formed, each track can be assigned a priority level and the best track can be picked out by analyzing measure data and the error of the locating arithmetic real-timely. This way, accurate and stable target location can be obtained. In addition, data smoothing, extrapolating forecast, and counter guidance to measure stations are also applied in the system. With all these means, the whole optics and electrics system can fulfill its tasks stably and dependably.