论文部分内容阅读
着舰引导雷达工作环境恶劣,要求精度高,需要定时进行标校,而普通标校方法没有考虑航母运动对标校结果的影响,并且目标位置真值的获取方法精度不够,为此,提出了一种基于EMD和GPS的航母舰载机着舰引导雷达的标校方法,首先建立了舰载雷达常用的坐标系并推导了它们之间的转换关系,然后研究了经验模态分解去噪的原理并提出了一种分量判别函数,接着给出了航母姿态测量方案和详细的标校过程,最后在对航母运动姿态建模的基础上进行了仿真。仿真结果说明,论文提出的标校方法可以很好地发现舰载机着舰引导雷达的方位、俯仰和距离的系统误差。
Landing guide radar has bad working environment and requires high precision, which requires regular calibration. However, the ordinary calibration method does not consider the effect of carrier movement on calibration results and the precision of the method for obtaining the true value of the target position is not enough. Therefore, A calibration method based on EMD and GPS for ship-borne guided radar of carrier-based aircraft carrier is proposed. Firstly, the common coordinate system of shipborne radar is established and the conversion relation between them is deduced. Then the empirical mode decomposition denoising Principle and proposed a component discriminant function, and then gives the aircraft carrier attitude measurement program and a detailed calibration process. Finally, based on the carrier aircraft attitude modeling based on the simulation. The simulation results show that the calibration method proposed in this paper can well find out the systematic errors of azimuth, pitch and distance of the ship-borne pilot-guided radar.