Ship Navigation Radar Terminal Display Design And Implementation

Ship-navigation radar plays an important role in navigation.It brings convenience to ship positioning,observation,target identification,etc.It also guarantees the safety of ship navigation.The radar display and control terminal is the terminal display part of the ship navigation radar.Users can clearly view the target information scanned by the radar through the display terminal,and can accurately control and use the radar by utilizing its humancomputer interaction function.At present,the display and control functions of navigation radar terminals are becoming more and more abundant,but there are still some shortcomings,such as insufficient platform adaptability,terminal data processing ability,especially the effect of clutter processing is not satisfactory,etc.This article aims at the above shortcomings,designed the human-computer interaction interface of the navigation terminal by Qt's cross-platform characteristics.At the same time,the rain and snow clutter and sea clutter in the radar echo data are suppressed through the relevant software processing algorithm,and the data processed image is displayed in the In the interactive interface,the specific works are as follows:Firstly,the working principle of ship navigation radar is introduced in detail,including the working flow of pulse radar and the overall structure of radar system.The model analysis and suppression of clutter processing such as rain,snow and sea waves in radar primary processing are studied,which provides a theoretical basis for clutter suppression processing of terminal software.At the same time,the echo track and track of the target scanned by the antenna are also introduced.Secondly,by analyzing the functions of the radar terminal system,the overall software is designed in Qt platform,the human-computer interface of the terminal display module is developed,and the radar echo data is received through the network interface.Finally,Fast Time Constant(FTC)and Sensitivity Time Control(STC)methods are implemented by software,and the simulated rain and snow clutter and the real sea clutter data are suppressed by Constant false alarm rate(CFAR)algorithm,finally the target detection data are drawn in the radar image display area of the interface.