基于舰船运动时间序列预报的直升机着舰时机判断  

Judgment of helicopter landing time based on the prediction of ship movement time series

作　　者：冀明 杨帅 赵佳 JI Ming;YANG Shuai;ZHAO Jia(Nanjing Research Institute on Simulation Technique,Nanjing 210000,China)

机构地区：[1]南京模拟技术研究所,江苏南京210000

出　　处：《飞行力学》2022年第1期90-94,共5页Flight Dynamics

摘　　要：为解决舰载直升机在海上返航着舰的安全问题,开展了直升机着舰时机判断研究。首先,基于时间序列预报方法,采用AR自回归模型,模型参数估计使用递推最小二乘算法进行在线辨识,对于存在的数据饱和问题引入了遗忘因子加以解决,实现了对舰船运动的短期预报。然后,根据舰船横摇运动的实时预报结果和周期性特点,选取横摇角度及角速度满足安全阈值的时间段,确定直升机安全着舰的时机。研究结果表明:该方法有效提高了直升机着舰的安全性。In order to solve the safety problem of ship borne helicopter’s returning and landing, this paper studies the judgment of helicopter landing time. Firstly, based on the time series forecasting method, this paper adopts the AR autoregressive model, uses the recursive least squares algorithm for online identification for model parameter estimation, introduces the forgetting factor to solve the existing data saturation problem, and realizes the short-term forecast of ship motion. Then, according to the real-time prediction results and periodic characteristics of the ship’s roll motion, select the time period when the roll angle and angular velocity meet the safety threshold to determine the time for a safe landing. The results show that this method effectively improves the safety of helicopter landing.

关 键 词：舰船运动 时间序列预报 直升机 着舰 

分 类 号：V328[航空宇航科学与技术—人机与环境工程] U674.7[交通运输工程—船舶及航道工程]