The centerline surveillance system can provide assistant decision making on carrier gliding slope deviations for Landing Signal Officers (LSOs).Aiming at the deployment of the centerline surveillance system in ordinary airport for Field Carrier Landing Practice (FCLP), the method of mobile deployment and offset installation is proposed based on analysis to the LSO centerline surveillance assistant decision-making principles.By establishing the crosshair model of gliding slope, the issues of high-precision measurement and indication of offset centerline are solved.The architecture of the system is designed and simulation is made.The results show that: 1) The designed system can provide the deviation between the flight path and the ideal gliding slope for the LSO;2) Both the gliding slope indication and the indication accuracy meet the requirements;and 3) The system is flexible for deployment,economic in cost, and convenient to use.