摘要
实际应用背景中,许多目标均做等大地高飞行,但飞行高度值未知。探测中高空目标时,2D雷达系统误差估计需要同时对目标高度进行估计。针对这种情形,首先,建立地球球处理模型,并验证这种近似处理模型的可行性;其次提出将目标高度与2D雷达系统误差进行联合估计的思想,并建立ECEF坐标系下的联合估计模型;仿真结果验证该方法的有效性,经过系统误差修正和高度补偿后,各2D雷达探测航迹精度得到大幅提高。
In practical application background, many targets keep a constant altitude flight, but the altitude is unknown. To estimate 2 D radar’s systematic error, estimation for target’s height is essential when tracking high-space targets. Firstly, a model is built that approximates earth for sphere and this approximation is proved reasonable. Then a joint estimation model for height and systematic error is built in ECEF coordinate system. Simulation results demonstrate that method is useful. After compensation of height and correction of systematic error, track precision in 2 D radars has a great improvement.
作者
陈林元
唐晶晶
杨洋
CHEN Linyuan;TANG Jingjing;YANG Yang(Southwest China Reasearch Institute of Electronic Equipment,Chengdu 610036,China)
出处
《电子信息对抗技术》
2020年第3期29-34,39,共7页
Electronic Information Warfare Technology
关键词
系统误差估计
高度估计
联合估计
等大地高
2D雷达
systematic error estimation
height estimation
joint estimation
constant geodetic height
2D radar
