However, those research was based on single target ship and there was little research on multi-ship radarplotting assessment system.
但目前的研究大部分是基于单物标船的研究，对于多物标雷达标绘评估系统的研究还很少涉及。
2
First of all, the dissertation reasons out the general mathematic models of radarplotting by means of the plane analytic geometry, and establishes the assessment factors of the system.