Saab AB

About: Saab AB is a company organization based out in Thun, Switzerland. It is known for research contribution in the topics: Signal & Antenna (radio). The organization has 862 authors who have published 928 publications receiving 8807 citations. The organization is also known as: Saab AB & Svenska Aeroplan AB.

Method for reinforcing a double-shell structure

Abstract: The invention concerns a method for reinforcing a double-shell structure in which a cellular core (2) is arranged between a first shell (5) and a second shell (6). In the method according to the invention, at least one cavity is formed in the double-shell structure from an opening in the first shell into the cellular core (2) so that the cavity substantially extends through the cellular core (2) to the second shell. Fixative (8) is injected into the cavity. A stiff bar (7) is introduced into the cavity, whereupon excess fixative (8) is allowed to pass out of the cavity. Finally, the fixative left in the cavity is cured.

Tracking of a moving object for a self-defence system

Abstract: A system for determination of kinematics of a moving object comprising: a sensor (1) producing angular data for the object at a number of observation times, a state initialization unit (7), receiving angular data from the sensor and on basis thereof determining a first kinematic state of the object, and a tracking filter (11) having a prediction unit, arranged to determine a predicted kinematics state of the object on bases of a kinematic model of the object, wherein the kinematic model comprises a guidance law locked on a known position, and at least one previously determined kinematic state of the object, and a state updating unit, receiving angular data from the sensor and the predicted kinematic state of the object, and on basis thereof determining an updated kinematic state of the object.

Method and system for generating a route

Abstract: A method for generating a route including at least one path. The method is suitable for aircraft reconnaissance of an area. The method includes encompassing the area with a geometrical figure, generating a first direction depending upon a configuration of the figure, generating the at least one path depending upon the first direction wherein the path corresponds to a sub area covering at least a part of the area.

Near to far field transformation of RCS using a compressive sensing method

Abstract: Near field Inverse Synthetic Aperture Radar Cross Section (RCS) measurements are used in this study to obtain geometrically correct images of objects placed on a turntable. The images of the targets are processed using a method common in the compressive sensing field, Basis Pursuit Denoise. A near field model based on isotropic point scatterers is set up. The target model is naturally sparse and this l 1 -minimization method works well to solve the inverse problem. The point scatterer solution is then used to obtain the far field RCS. The methods required for the imaging and the RCS extraction are described and evaluated. A comparison to image based near to far field methods utilizing conventional back projection is made. The main advantage of the method presented in this paper is the absence of clutter, noise and side lobes in the solution of the inverse problem. Separate features in the images containing the point scatterers can be selected and a processing step can be performed to obtain the far field RCS of the full target or selected parts of the target.