SAAB AB

The present disclosure relates to a method for detection and classification of aerial objects, the method including obtaining, in an input detection unit, a radar input signal from a radar station. Further including processing, in a processing unit, a pre-configured sample data window of the detected input signal by using a spectral analysis method to obtain spectral data and extracting fundamental tones from said spectral data by using an estimation technique. Moreover, the method measures, in the processing unit, statistical features between the extracted fundamental tones and detects and classifies objects by comparing, in the processing unit, the measured statistical features with at least one pre-defined reference feature.

The present disclosure relates to an antenna arrangement including a first antenna configured to operate within a first frequency band and a planar layer having an oblong conducting structure attached thereon, the conducting structure being arranged within an illumination-field of the first antenna. Further including a plurality of capacitive strips arranged on opposing longitudinal portions of the planar layer extending along a length of the conducting structure, the longitudinal portions being separated by the conducting structure.

The disclosure relates to an antenna arrangement, including an antenna mounted inside a radome. The antenna arrangement further includes a mounting arrangement arranged to mount the antenna arrangement to an antenna platform. The antenna is a tapered slot antenna, the radome has an aerodynamic shape, and the mounting arrangement includes two antenna fastening means and an antenna radio frequency connector arranged to interact with corresponding antenna platform fastening means and an antenna platform radio frequency connector arranged on the antenna platform.

The present disclosure relates to a composition for providing a camouflage coating, the composition including a polyolefin binder dispersion; a low-emissive pigment; and a matting agent. The matting agent is a thermoplastic polymer matting agent. The disclosure further relates to a method of producing a low-emissive textile product using such a composition, as well as low-emissive textile products and camouflage products produced using the composition.

A method for providing a trigger signal in a slave node (S 1 -SN) in a data ring-bus ( 1 ) is described. the method comprising the steps of receiving a master clock signal on the clock input ( 5 ), updating a slot counter value C with 1 for each clock cycle of the master clock signal received. and resetting the slot counter value C to 1 after the slot counter value C has reached a maximum value. Max, receiving a first data message on the data input ( 6 ), adjusting the slot counter value C to S, for the clock cycle in which the end of the first data message was received, wherein S is in the interval 2 to Max−1, receiving a subsequent data message after the first data message, and providing a trigger signal when the slot counter value C equals T, if the end of the subsequent data message is received when the slot counter value C is valid.

A method ( 1000 ) for determining a position deviation of a first node the method comprising obtaining ( 1110 ) input data, at a first and second position. Said input data comprises, an estimated position of the first node (p 1 ) and a first velocity vector (v 1 ) of the first node, obtaining ( 1120 ) the exact position (p 2 *) of the second node; obtaining ( 1125 ) the emitted frequency (f e ) of an acoustic signal a source; ( 1130 ) receiving the acoustic signal (S) and measuring the observed frequency; calculating ( 1140 ) a second velocity vector (v 12 ) which defines the velocity of the first node in relation to the second node; and calculating ( 1150 ), the angle (α) between the first velocity vector and the second velocity vector; determining ( 1160 ) based on the angle, the first velocity vector, and the estimated position of the first node, a line of direction (L) indicating the direction from the estimated position of the first node towards an estimated position of the second node, and determining ( 1300 ) based on a first and second line of direction an intersection point defining the estimated position of the second node (p 2 ); determining ( 1400 ) a deviation vector (V d ) corresponding to the difference between the estimated position of the second node and the exact position of the second node, and determining ( 1500 ) the position deviation of the first node which corresponds to the deviation vector. The disclosure further relates to a positioning system for determining a position deviation for a first node and an underwater vehicle.

The present invention relates to a spring arrangement for use in a countermeasure magazine, said spring arrangement including a plurality of elements, wherein each one of said elements has a base portion and a plurality of spring portions extending from a first edge of said base portion, and wherein said spring portions of each element are distributed along a length of said base portion, and wherein said elements include mating connection means such that said elements may be connected to each other.

The present disclosure relates to an antenna platform arrangement ( 1 ) comprising a movable antenna plate ( 2 ) having an antenna surface ( 3 ) and an opposing connection surface ( 4 ), a fixed base ( 5 ) and a connection means ( 6 ) connecting the connection surface ( 4 ) and the fixed base ( 5 ). Moreover, the movable antenna plate ( 2 ) being associated with an apex (c 0′ ) of a conical space (c 0 ) being in-between said fixed base ( 5 ) and said movable antenna plate ( 2 ), wherein said connection means ( 6 ) is configured to selectively control said movable antenna plate ( 2 ) about said conical space (c 0 ), to a pre-determined maximum angle (α) relative a first plane (x 1 ) being parallel with said fixed base ( 5 ).

A liner for a shaped charge including an inner layer made of a material having a density below 10.5 g/cm 3 , and an outer layer made of a material having a density below 2.0 g/cm 3 , wherein the outer layer is formed directly on the inner layer. In a first state, both the inner layer and the outer layer are compressed towards the symmetry axis (x) of the liner, thereby forming a projectile. In a second state, the inner layer forms a penetration jet of the projectile and the outer layer forms a slug of the projectile. The melting point of the outer layer is above 100° C. The invention also concerns a shaped charge including the liner, a method for manufacturing the liner and a method for detonation of the shaped charge.

The present disclosure relates to a notch antenna structure including a plurality of notch antenna elements arranged in at least a first row (R). Each notch antenna element includes a base portion having first and second opposing surfaces, a first electrically conductive body and an adjacent second electrically conductive body, the electrically conductive bodies extending vertically from the first surface, forming an integral structure, a tapering gap between the two electrically conductive bodies. The notch antenna structure includes a bottom plane for receiving the second surface of the plurality of notch antenna elements and the first electrically conductive body includes a leg portion having a feed arrangement proximate to the tapering gap, the feed arrangement including a feed point.