The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper will discuss recent improvements made to the Monte Carlo Scene (MCScene) code to enable limb-viewing scenarios and situations where the sun is below the horizon. MCScene is a high-fidelity model for full optical spectrum (UV through LWIR) hyperspectral image (HSI) simulation. MCScene generates HSI scenes for algorithm validation, utilizing a Direct Simulation Monte Carlo (DSMC) approach...
This paper proposes a nonlinear vision based flight control law for the automatic landing of an aircraft. Although a number of methods have been proposed in this domain, our method differs by the following features. First, we do not assume knowledge of the runway size or distance from the aircraft, or the help of a ground technology to guide the aircraft. Second, this design addresses the model nonlinearities,...
A recent air defense missile system is required to have a capability to intercept a tactical ballistic missile(TBMs) by performing engagement control efficiently. The missile defense system has to predict TBM trajectory accurately with cueing information received from an early warning system in order to designate search direction and volume to detect/track TBM as fast as it can and also generates...
This paper deals with the problem of modelling aircraft movements in geodetic coordinates. The proposed reference model is based on the WGS-84 framework and employs loxodromic and orthodromic models of uniform motions, curvilinear manoeuvres and uniform change of altitude. The properties are illustrated using simulations.
In the entry phase, aero-environment is extremely complex for Reusable Launch Vehicles (RLVs). This brings a huge challenge to design the entry guidance law for RLVs. In this paper, an entry trajectory planning method for RLVs is researched and the algorithm is improved to ensure the continuity and smoothness of the longitudinal reference trajectory. Meanwhile, the skipping of trajectory control is...
This paper analyzes how to set up a trajectory simulation of the short-range anti-ship missile, considering curvature of the Earth. According to the system working mechanism of some missile and curvature of the earth, a motion simulation model of the whole trajectory is built. A lot of shooting simulation tests are conducted, and the results show that various ranges have different influences on acquisition...
Under the incomplete measurement situation, how to get a smoothing trajectory with high precision is an important problem. In this article, a fusion method based on the error model best estimate of trajectory (EMBET) algorithm is proposed to handle the incomplete measurement problem by using a sparse representation model for trajectory of reentry target. And the sparse representation model of trajectory...
This paper describes a method for creating synthetic air tracks without the aide of a sophisticated simulator. The proposed method creates a position and velocity function for an aircraft given its starting location and speed, altitude, and heading on each leg of its height. An optimization procedure is used to fit the position and velocity functions to the supplied data. Several examples of tracks...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.