基于机场场面分布式MLAT到达时间差定位研究

Research on Arrival Time Difference Positioning Based on Distribution MLAT of Airport Surface

研究分布式多点定位(Distribution Multilateration,DMLAT)原理和解算定位模型,并对到达时间差(Time Difference of Arrival,TDOA)和标校补偿量的关系进行分析研究。为了解算飞行目标在机场定位的准确性,不得不考虑网络传输、雷达站的部署以及高度都对TDOA的匹配造成影响。文章分别绘制Chan算法未标校和标校补偿量误差示意图进行对比,并将它们应用到仿真试验中,解算飞行目标的位置形成的航迹示意图也进行对比。

The principle and solution position model of distribution Multilateration(DMLAT)are studied,and the relationship between Time Difference of Arrival(TDOA)and calibrated compensation is analyzed.In order to solve the accuracy of flight targets positioning at the airport,we have to consider the impact of network transmission,radar station deployment and height on TDOA matching.In this paper,the error diagrams of uncalibrated and calibrated compensation of Chan algorithm are drawn for comparison.They are applied to simulation test,and the track diagram formed by solving the position of the flight target is also compared.