Patents Assigned to Saab AB
  • Patent number: 9045228
    Abstract: An arrangement at an aircraft of a dispenser unit for countermeasures. The arrangement including a wall of an aircraft fuselage. A dispensing nozzle is arranged on the dispenser unit through which the countermeasures are dispensed. The dispenser unit is arranged within the aircraft fuselage. An aperture for dispensing the countermeasures is arranged in the wall of the aircraft fuselage. The aperture is arranged to substantially coincide with the dispensing nozzle.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: June 2, 2015
    Assignee: SAAB AB
    Inventor: Robert Melin
  • Patent number: 9040142
    Abstract: A composite article having a longitudinal direction and a transversal direction. The article includes a stack of plies wherein one ply is a bottom ply and one ply is a top ply. Most or all of the plies include fibers. A plurality of plies have fibers substantially in an orthogonal direction and substantially in a same direction as the longitudinally direction of the article. The bottom ply and the top ply have fibers in a substantially orthogonal direction to the longitudinal direction of the article. At least one ply has the fibers substantially in the same direction as the longitudinal direction of the article. At least one of the plies having fibers substantially in the longitudinal direction includes particles selected from the group of thermoplastic tougheners, nano particles, micro particles, elastic particles, elastomer particles and polymer particles or a combination. Also a method of forming an article on a tool.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: May 26, 2015
    Assignee: SAAB AB
    Inventors: Björn Weidmann, Mikael Petersson, Per Hallander, Pontus Nordin, Tommy Grankäll
  • Publication number: 20150124501
    Abstract: A power converter system suitable to provide a load with electrical power, the system comprising; an input voltage terminal; an output voltage terminal; a first power converter unit; a second power converter unit; an input relay unit; an output relay unit; a control unit; wherein the control unit is configured to control the input relay unit and the output relay unit such that the first and second power converter units are engaged alternating at subsequent power ups of the voltage input terminal.
    Type: Application
    Filed: February 2, 2012
    Publication date: May 7, 2015
    Applicant: SAAB AB
    Inventors: Daniel Dermark, Lars Kanderhag
  • Patent number: 9024703
    Abstract: The present invention relates to a signal directing means for dividing or combining signals. It comprises a bottom row first port, a first row first and second port, and a bottom row signal connector. The signal directing means further comprises a first row first and second amplifier, each first row amplifier having a corresponding first and second terminal, said first terminals being connected along the bottom row signal connector. The signal directing means also comprises a first row signal connector, where said second terminals are connected along the first row signal connector. The second terminal of the first row first amplifier is connected to the first row first port and the second terminal of the first row second amplifier is connected to the first row second port. A plurality of second connector ports are also provided, with connecting impedances connecting between the respective ports.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: May 5, 2015
    Assignee: SAAB AB
    Inventors: Mattias Ferndahl, Hans-Olof Vickes
  • Patent number: 9020204
    Abstract: A method and apparatus for determining position and orientation enabling navigation of an object using image data from at least a first and a second 2D image from at least one camera mounted on said object. The method comprises the steps of: correcting images from one or several cameras and from at least a first and a second 2D image for their respective radial distortion and other measurable effects which result in poor image precision; matching 2D image items in and between at least a first and second 2D image; calculating a fundamental matrix by using correlated image points from at least a first and a second 2D image; calculating and extracting estimated first rotation and translation values from the fundamental matrix using single value decomposition (SVD) based on information from at least a first and a second 2D image; iterating more accurate final rotation and translation values by using the LevenBerg-Marquard algorithm and determining the position and orientation of said object.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: April 28, 2015
    Assignee: SAAB AB
    Inventor: Anders Modén
  • Patent number: 9013346
    Abstract: A radar system including a switching mode power converter. A pulse radar unit is configured to transmit RF pulses with a pulse repetition frequency. The power converter includes a switching controller that is configured to control at least one switching element. The switching controller is configured to receive a frequency modulated input signal. The modulation frequency of the input signal is configured to be derived from the pulse repetition frequency of the radar unit.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: April 21, 2015
    Assignee: SAAB AB
    Inventor: Bo Nettelbland
  • Patent number: 9007257
    Abstract: The invention relates to a method for controlling a sensor in a combat aircraft (1) comprising the steps of: a) determining (3) direction and size of a defence zone around the combat aircraft (1) based on a plurality of characteristic parameters of an enemy combat aircraft (2), b) determining (4) direction and size of at least one offence zone around the combat aircraft (1) based on the plurality of characteristic parameters of the enemy combat aircraft (2), and c) controlling (5) the sensor in the combat aircraft (1) according to emission level and detection capacity within at least one of the defence zone and the at least one offence zone. In this way, the sensors are controlled reliably and thus the pilot can act and react mission-oriented.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: April 14, 2015
    Assignee: SAAB AB
    Inventors: Anders Lundqvist, Vibeke Kensing
  • Patent number: 9008939
    Abstract: A vehicle control system and method combining control allocation and phase compensation for forming a phase compensated actuator command signal based on a control demand signal. A feedback unit includes a matrix multiplication unit for forming an estimated behavior signal, from a control efficiency matrix and the actuator command signal. The estimated behavior signal is fed to a second summation unit for forming a difference signal. The difference signal is processed by a filter unit for forming a feedback signal which is connected to a first summation unit for forming a modified control demand signal, such that the modified control demand signal is adjusted to always represent a control demand realizable by the vehicle. The modified control demand signal is further connected to the second summation unit and to a control allocator which output is then connected to the matrix multiplier to form a feedback loop.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: April 14, 2015
    Assignee: SAAB AB
    Inventor: Bengt-Göran Sundqvist
  • Patent number: 9003943
    Abstract: The invention relates to a method for decision support of a combat object (1) in a combat situation comprising the steps of: a) detecting (3) an enemy object (2) such that a plurality of characteristic parameters of the enemy object (2) is determined, b) calculating (4) at least one quality factor for at least one combat sensor of the combat object (1), wherein each quality factor is adapted for indicating identification ability of a combat sensor, and calculating (4) at least one signature factor for at least one enemy sensor of the enemy object (2) based on a predetermined model, wherein each signature factor is adapted for indicating identification ability of an enemy sensor, c) allocating (5) each quality factor calculated in the previous step b) to each combat sensor and allocating (5) each signature factor calculated in the previous step b) to each enemy sensor, and d) controlling (6) each combat sensor against the enemy object (2) based on the result of the previous step c).
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: April 14, 2015
    Assignee: SAAB AB
    Inventors: Anders Lundqvist, Vibeke Kensing
  • Patent number: 9003944
    Abstract: The present invention regards a pyrotechnic countermeasure (15, 25) dispensing system (1) comprising a set of contacting members (27, 27?) of a launching electronic circuitry (19). A first magazine (A) is mountable in said housing (23) in such way that a contacting body (41) of each pyrotechnic countermeasure (25) being in electrical communication with a dedicated contacting member (27) of the launching electronic circuitry (19), when the system (1) is ready to use. A central electronic unit (3) is associated with the launching electronic circuitry (19) for actuating of the pyrotechnic countermeasure (25) accommodated in the first magazine (A) in dependence upon a detected threat (29).
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: April 14, 2015
    Assignee: SAAB AB
    Inventor: Christer Zätterqvist
  • Patent number: 9000340
    Abstract: The object of the present invention is to provide an inventive guidance system for tracking and guiding at least one object, wherein said guidance system comprises a base station (1) including an optical imaging system (3) configured to determine the angular position vector of said at least one object (5, 15), an optical communication link for transmitting guidance control commands from said base station (1) to said at least one object (5, 15), and steering means provided on said at least one object (5, 15) for adjusting the direction of said at least one object (5, 15) in response to said guidance control commands. The invention also provides a corresponding guiding method.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: April 7, 2015
    Assignee: SAAB AB
    Inventor: Fredrik Dicander
  • Patent number: 8989449
    Abstract: An arrangement and methods for firing a fire arm. The fire arm includes a determining unit configured to determine a movement of an aim point for the fire arm relative to a target. A processing unit is configured to determine a target point for the aim point based on the movement of the aim point relative to the target and to predict the future movement of the aim point. A firing unit is configured to fire the fire arm when the aim point is predicted to be within a tolerance of the target point.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: March 24, 2015
    Assignee: SAAB AB
    Inventors: Göran Backlund, Gert Johansson
  • Patent number: 8985518
    Abstract: An air guide for a dispenser. At least one air scoop is configured to guide an air stream to a feeding out opening for chaffs on the dispenser in order to facilitate packages of chaffs to be released from the dispenser. A control unit is configured to control the air stream through the at least one air scoop.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: March 24, 2015
    Assignee: Saab AB
    Inventor: Christer Zätterqvist
  • Publication number: 20150078652
    Abstract: The present invention relates to a system (200) and method for determining a relation between a first scene and a second scene. The method comprises the steps of generating at least one sensor image of a first scene with at least one sensor; accessing information related to at least one second scene, said second scene encompassing said first scene, and matching the sensor image with the second scene to map the sensor image onto the second scene. The step of accessing information related to the at least one second scene comprises accessing a 3D map comprising geocoded 3D coordinate data. The mapping involves associating geocoding information to a plurality of positions in the sensor image based on the coordinate data of the second scene.
    Type: Application
    Filed: November 8, 2011
    Publication date: March 19, 2015
    Applicant: SAAB AB
    Inventors: Michael Olofsson, Folke Isaksson, Magnus Brege, Ingmar Andersson, Per Carlbom, Johan Borg, Leif Haglund, Fredrik Rosenqvist
  • Publication number: 20150059566
    Abstract: A countermass container for use in a recoilless weapon. The countermass container includes an envelope encloses a countermass. A recoilless weapon includes a barrel accommodating an ammunition unit, a propellant charge and a countermass container. The countermass container includes an envelope enclosing a countermass. The barrel includes a front end opening for firing the ammunition unit out of the barrel and a rear end opening for ejecting the envelope and countermass of the counter mass container. The envelope is divided into a front section and a rear section. The rear section of the envelope has a weaker construction than the front section of the envelope to more easily crack than the front section of the envelope. Splines are provided at the front section to create ducts.
    Type: Application
    Filed: February 13, 2012
    Publication date: March 5, 2015
    Applicant: SAAB AB
    Inventor: Mats Nilsson
  • Patent number: 8970401
    Abstract: A collision avoidance system for deciding whether an autonomous avoidance maneuver should be performed in order to avoid a mid-air collision between a host aerial vehicle equipped with the system and an intruding aerial vehicle. At least one electro-optical sensor captures consecutive images of an intruding vehicle such that the vehicle manifests itself as a target point in the images. An image processor estimates the azimuth angle, elevation angle and a first time-to-collision estimate of the time to collision between the host vehicle and the intruding vehicle. The first time-to-collision estimate is estimated based on scale change in the target point between at least two of said consecutive images. A tracking filter is arranged to estimate a second time-to-collision estimate using the azimuth angle, the elevation angle and the first time-to-collision estimate estimated by the image processor as input parameters.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: March 3, 2015
    Assignee: SAAB AB
    Inventors: Sören Molander, Jimmy Jonsson
  • Publication number: 20150051827
    Abstract: A method for improving an accuracy of a radio based navigation system by correcting the position given by the radio based navigation system with a correction vector derived from localization data stored in a map database. Position coordinates of the radio based navigation system are measured. A set of 3D map data is selected based upon the measured position coordinates of the radio based navigation system position coordinates. The actual position is determined from the selected 3D map data. The actual position data coordinates are retrieved from the 3D map data based upon the determined actual position. The correction vector is calculated from position difference between measured radio based navigation system position coordinates and retrieved actual position coordinates. The position given by the radio based navigation system is corrected with the correction vector.
    Type: Application
    Filed: September 16, 2011
    Publication date: February 19, 2015
    Applicant: SAAB AB
    Inventors: Per-Olof Persson, Rolf Michel
  • Publication number: 20150040787
    Abstract: A multi-mode fuse system for use in a warhead for combating a target. At least one target sensor is electrically connected to a signal processing block and an I/O-block. The I/O-block is configured to be set by the operator of the warhead. The target sensor is adapted to generate an electrical output in response to the rate of deceleration of the warhead. The fuse system is adapted to discriminate the hardness of the target based upon the electrical output of the target sensor and to select the mode of operation depending upon the target discrimination. The fuse system is adapted to discriminate at least one type of target depending upon the electrical output of the target sensors. The fuse system selects one of at least three modes of operation of the warhead. Also a method for classifying the target hardness and selection of the operational mode of a warhead.
    Type: Application
    Filed: September 16, 2011
    Publication date: February 12, 2015
    Applicant: SAAB AB
    Inventors: Milan Radojevic, Anders Nylén, Olov Thor
  • Patent number: 8953847
    Abstract: A method and apparatus for determining a position and attitude of at least one camera by calculating and extracting estimated rotation and translation values from an estimated fundamental matrix based on information from at least a first and second 2D image. Variable substitution is utilized to strengthen derivatives and provide a more rapid convergence. A solution is provided for solving position and orientation from correlated point features in images using a method that solves for both rotation and translation simultaneously.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: February 10, 2015
    Assignee: SAAB AB
    Inventor: Anders Modén
  • Patent number: 8947292
    Abstract: A radar system for a synthetic aperture radar including an arrangement of at least one transmitter, two receivers, two antennas and signal processing means located on a platform. The platform is arranged to move over ground and arranged to transmit a known signal shape and receive signals reflected from the ground. The received signals are used to produce a synthetic aperture radar image of the ground. The synthetic aperture radar image includes a number of resolution cells. The radar system is further arranged to operate in a frequency band with a center frequency and with a wide bandwidth of at least one octave. A first antenna and a second antenna have a length of less than half the wavelength of the center frequency. The radar system is further arranged for: a radar system transfer function to be flat over the frequency band and one-sided beam forming with wideband antenna gain. Also a corresponding method.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: February 3, 2015
    Assignee: SAAB AB
    Inventors: Lars-Gunnar Andersson, Hans Hellsten