Design And Implementation Of Aircraft Landing Information Processing And Display System

The flight of the aircraft,generally divided into take-off,pull to rise,flat,decline and landing.Among them,the take-off and landing stage have wide risk,so the related training in the field of security measure is to strengthen.With the continuous development of science and technology,the increasing flight mission,navigation task is complex,at the same time,modern warfare has higher requirement for the performance of the equipment,but the contradictory is the fall behind level of China’s national defense.It needs us in the constant improvement on the basis of existing.At present,in China’s air force flight training system,landing during the main security measure is the use of radar.Based on the related study of landing radar and communication with the pilot,we put forward the subject of the landing information processing and display.In this paper,based on the actual functional requirements of aircraft landing radar information and technology development direction,we designed the signal processing and display system based on the computer.The system used PCI bus to get the mature data and used the FPGA device in DMA way after the front-end signal processing of radar data,combined with high performance algorithm based on Intel back-end signal processing.Used Visual C++ as development tools,designed to achieve the strong practicability and operability of radar target display system.Landing in the information processing and display system is mainly discussed in high-speed data transmission,real-time information processing,real-time coordinate transform,image real-time display key problems,such as land for a certain type of radar is given the real time information processing and display system implementation scheme,radar signal collection and processing of hardware part for the design and development and system software design are completed.The system solves the traditional radar display coordinate display mode,shows the result is not accurate,the target trajectory can’t save and replay.In addition,also realized through the serial port card will this terminal after the collection and processing the information sent to the tower of the remote computer,the purpose of real-time information sharing is realized.In the design of hardware system,design the receiving signal conversion processing board,make the radar’s output signal can be converted to recognize and deal,at the same time,purchasing the technical mature data signal acquisition process card and universal serial interface card.In software,in order to prevent target mutations,adopted the clutter filter and point trace related and extrapolating wave gate approach,tracking trajectory for the smooth,effectively reduces the target’s jump;On the display mode,using the principle of coordinate transformation,the original radar using polar coordinate display mode,switch to a more intuitive rectangular coordinate display;In terms of transmission,using a serial port cards and modems,realize data sharing over a long distance,make the tower controllers and radar station can display software through the same system as observed in real time radar target tracking,improve the real-time and accuracy of the information observed,has brought efficiency and improve the quality of the flight safety of great help.The results show that the aircraft landing information processing and display system,can satisfy the landing radar during high-speed data read,real-time target information processing,target information integrated display terminals,such as information processing and display requirements,has much engineering application value.