| The display system of digital shipborne radar plays an importance role in targetrecognition and position, anti-collision navigation and so on. Compared with thetraditional radar, it has many advantages such as high performance, completefunctionality, convenient operation and small size. It can also realize the radar imagedisplay function with high resolution.It mainly focuses on two technologies, i.e., information fusion technology ofmulti-source navigation sensors and the display and control technology of integratednavigation information in digital marine radar. The thesis also designes and realizes theAIS and ARPA track fusion algorithm and the embedded marine radar display softwaresystem. The main contents are given as follows:1. The development of marine radar, especially in the aspect of radar displaytechnology is introduced. At the same time, the thesis research contents, purpose andmeaning are explained.2. The functional requirement of embedded marine radar is studied, and at thesame time the thesis described the technologies and principles which are involved in thesystem design process in detail. Based on these, the thesis then proposes a marine radardesign, and analysesthe related modules. Finally the thesis bringsout key technologies inthis thesis.3. The thesis studies the information fusion technology of multi-source sensors,and do some researches about AIS and ARPA track fusion algorithm. Firstly, the thesisproposes a preprocessing algorithm of the AIS&ARPA target position information. Thispreprocessing is aimed at time and space matching. Then the thesis adopts the relatedtheories of fuzzy mathematics to do a series of track information processing. Thismethod isexployed to do track association. Finally,the thesis matchs AIS track withARPA track one by one. Based on these, the thesis usesthe thesisighting method toachieve track fusion. And all the algorithms the thesisraise are simulated and verified onMatlab platform and has been realized in the engineering.4．The thesis analyses the functional requirements of the radar display system, studies the relevant display device drivers,breakthroughs the key technologies of radarecho displayed on the embedded system, and solves the problems encountered insoftware design to drawgraph. According to the requirement of the system,Based on thestudy of dual-core communication mechanism.The thesis has realized the radar terminaldisplay system based QT and related software, which are designed to meet thefunctional requirements and also have good reliability. This software system mainlyincludes a human-computer interactive module, a middle communication module and aninformation process module.Regarding the display and control function of the marine radar system, thethesishas done lots of function and performance testing and then has analyzed thetesting results in this thesis. It proves that the software system is capable of stableoperation and the expected target has been perfectly achieved. |
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