船舶导航系统目标综合信息模拟方法及精度分析

Marine navigation system composite target information simulation and accuracy analysis

为开发和测试船舶导航系统数据融合算法,提出产生同一运动目标的雷达测量数据(距离、方位)和GPS定位数据(纬度、经度)的方法,并对椭球模型和平面模型之间的坐标转换问题进行分析.椭球模型计算精度高,但是计算量大,不利于实时处理;平面模型虽然计算简单,但计算精度较低.通过计算机仿真实验分析比较这两个模型,研究在误差允许范围内如何合理利用模型达到最优设计的目的.

In order to study data fusion algorithm,mathematical models（ellipsoidal model and plane model） are presented to produce the radar measurement data（range and bearing） and GPS location data（latitude and longitude） of the same moving target ship.The coordinate transformation of the two models is studied.The ellipsoidal model is more accurate but also more complicated and is inconvenient for real-time processing.The plane model is simple but the accuracy is poor.The two models are analyzed and compared by computer simulation.