A study of prediction techniques for aircraft carrier motions at sea (Deterministic and statistical prediction techniques for aircraft carrier motions at sea for application to aircraft landing operations)

1969 ◽  
Vol 3 (3) ◽  
pp. 121-131
Author(s):  
PAUL KAPLAN
Keyword(s):  
Statistical Prediction ◽  
Aircraft Carrier ◽  
Aircraft Landing ◽  
Prediction Techniques

scholarly journals Nonlinear multivariable analysis of SOI and local precipitation and temperature

2005 ◽  
Vol 12 (1) ◽  
pp. 67-74 ◽  
Author(s):  
Y.-H. Jin ◽  
A. Kawamura ◽  
K. Jinno ◽  
R. Berndtsson
Keyword(s):  
Time Series ◽  
Phase Space ◽  
Southern Oscillation ◽  
Statistical Prediction ◽  
Meteorological Variables ◽  
Space Trajectories ◽  
Local Climate ◽  
Prediction Techniques ◽  
Precipitation And Temperature ◽  
Phase Space Trajectories

Abstract. Global climate variability affects important local hydro-meteorological variables like precipitation and temperature. The Southern Oscillation (SO) is an easily quantifiable major driving force that gives impact on regional and local climate. The relationships between SO and local climate variation are, however, characterized by strongly nonlinear processes. Due to this, teleconnections between global-scale hydro-meteorological variables and local climate are not well understood. In this paper, we suggest to study these processes in terms of nonlinear dynamics. Consequently, the nonlinear dynamic relationship between the Southern Oscillation Index (SOI), precipitation, and temperature in Fukuoka, Japan, is investigated using a nonlinear multivariable approach. This approach is based on the joint variation of these variables in the phase space. The joint phase-space variation of SOI, precipitation, and temperature is studied with the primary objective to obtain a better understanding of the dynamical evolution of local hydro-meteorological variables affected by global atmospheric-oceanic phenomena. The results from the analyses display rather clear low-order phase space trajectories when treating the time series individually. However, when plotting phase space trajectories for several time series jointly, complicated higher-order nonlinear relationships emerge between the variables. Consequently, simple data-driven prediction techniques utilizing phase-space characteristics of individual time series may prove successful. On the other hand, since either the time series are too short and/or the phase-space properties are too complex when analysing several variables jointly, it may be difficult to use multivariable statistical prediction techniques for the present investigated variables. In any case, it is essential to further pursue studies regarding links between the SOI and observed local climatic and other geophysical variables even if these links are not fully understood in physical terms.

scholarly journals A Fuzzy Path Selection Strategy for Aircraft Landing on the Carrier

2018 ◽  
Author(s):  
Xichao Su ◽  
Yu Wu ◽  
Jingyu Song ◽  
Peilong Yuan
Keyword(s):  
Decision Making ◽  
Group Decision Making ◽  
Group Decision ◽  
Experimental Studies ◽  
Essential Elements ◽  
Path Selection ◽  
Selection Strategy ◽  
Aircraft Carrier ◽  
Aircraft Landing ◽  
Flight Deck

Landing is one of the most dangerous tasks in all the operations on the aircraft carrier, and the landing safety is very important to the pilot and the flight deck operation. The problem of landing path selection is studied in this paper as there several candidates corresponding to different situations. A fuzzy path selection strategy is proposed to solve the problem considering the fuzziness of environmental information and human judgment, and the goal is to provide the pilot with more reasonable decision. The strategy is based on Fuzzy Multi-attribute Group Decision Making (FMAGDM), which has been widely used in industry. Firstly, the background of the path selection problem is given. Then the essential elements of the problem are abstracted to build the conceptual model. A group decision-making method is applied to denote the preference of each decision maker for each alternative route, and the optimal landing path under the current environment is determined taking into account the knowledge and the weight of both decision makers. Experimental studies under different setups, i.e., different environments, are carried out. The results demonstrate that the proposed path selection strategy is validated in different environments, and the optimal landing paths corresponding to different environments can be determined.

Airborne Integrated Vision/Inertial Navigation System for Landing on Aircraft Carrier

2013 ◽  
Vol 748 ◽  
pp. 747-753 ◽  
Author(s):  
Dan Wang ◽  
Wei Wang
Keyword(s):  
Inertial Navigation System ◽  
Infrared Camera ◽  
Flight Test ◽  
Integrated System ◽  
Guidance System ◽  
Aircraft Carrier ◽  
Aircraft Landing ◽  
Newton Iteration Method ◽  
Touchdown Point ◽  
Rough Sea

It is a very difficult task to land on aircraft carrier, because of limits of the carrier runway during rough sea. In this article, a new algorithm of aircraft carrier landing is proposed utilizing airborne infrared camera/inertial integrated system, which can provide the relative positions and orientation of the aircraft with respect to the carrier so as to help aircrafts semi-auto or auto landing. The mathematic relationship between guidance parameters and imaging information was modeled, and then the relative position and attitude information between the carrier and the aircraft were estimated through Newton iteration method. From that information, the pitching, rolling and heave movement of the carrier were estimated and compensated, so the touchdown point could be predicted and provided to the pilot so as to control aircraft landing. On the ground of the theoretic research, the field verification tests were carried out, which adopted the minification scheme to simulate the process of aircraft carrier landing. In the experiments, the runway simulator simulated the motion of the carrier runway and the land vehicle was used as the aircraft. The results verify the landing guidance system scheme is feasible and effective, and lay the technical foundation for the flight test, improving its safety.

Receding Horizon Control on Automatic Landing Lateral Loop of Carrier-Based Aircraft

2013 ◽  
Vol 300-301 ◽  
pp. 1610-1616 ◽  
Author(s):  
Xing Wei Jiang ◽  
Qi Dan Zhu ◽  
Zi Xia Wen
Keyword(s):  
Control Method ◽  
Receding Horizon Control ◽  
Simulation Environment ◽  
Receding Horizon ◽  
Aircraft Carrier ◽  
Lateral Control ◽  
Aircraft Landing ◽  
Automatic Landing ◽  
Attitude Tracking ◽  
Lateral Loop

Since the angled deck is only tens miles width, the task of landing an aircraft on an aircraft carrier requires precise control, especially lateral loop. For this problem, this paper focuses on researching the aircraft automatic landing lateral control. In lateral control, the most crucial parts are controlling the off center distance and keeping the desired landing attitude. So firstly a nonlinear kinetic model of aircraft landing in lateral directional axis is established, and then transformed into error states. The controller is designed for an angle of attack of 11.7 deg and an airspeed of 40m/s, the equilibrium point. Receding horizon control methodology is employed to solve the aircraft lateral control problem. This controller is solved in MATLAB, and sent to the 3D simulation environment by network communication, to control the aircraft landing lateral loop. The simulation environment is programmed based on VC++ software. The simulation results show that receding horizon control method can achieve trajectory tracking and attitude tracking of nonlinear aircraft landing system.

Algorithm for evaluation the navigation complex of a carrier-based aircraft

2020 ◽  
pp. 176-180
Keyword(s):  
High Efficiency ◽  
A Priori ◽  
Statistical Characteristics ◽  
Navigation Systems ◽  
Aircraft Carrier ◽  
Input Noise ◽  
Aircraft Landing ◽  
Kalman Adaptive Filter ◽  
Satellite Navigation Systems ◽  
Priori Information

The features of an aircraft landing approach on a moving aircraft carrier are studied. The main measuring systems used in landing approach for a carrier-based aircraft are inertial and satellite navigation systems. Joint signals processing in the navigation system is carried out by using an adaptive Kalman filter that can operate in the absence of a priori information about the statistical characteristics of the input noise. Kalman adaptive filter is based on using the properties of the updated sequence. The simulation results according to the semi-natural experiment showed its high efficiency.

Sign in / Sign up

Export Citation Format

Share Document