摘要:
A device at an airborne vehicle including a flight control system configured to control the behavior of the airborne vehicle based on acceleration commands, a first control unit configured to provide the acceleration commands to the flight control system, and a collision avoidance unit. The collision avoidance unit includes a detection unit arranged to detect whether the airborne vehicle is on a collision course and a second control unit arranged to feed forced acceleration commands to the flight control system upon detection that the airborne vehicle is on a collision course. A method for collision avoidance in an airborne vehicle.
摘要:
A method for detecting targets including moving and stationary targets with a radar system equipped with Synthetic Aperture Radar (SAR) onboard a SAR platform including navigation equipment for accurate determination of the position of the SAR platform. The SAR platform is transversing a stationary ground region and targets in the ground region, in which the SAR platform obtains radar data utilizing at least one antenna. A SAR processor records the radar data and the position of the antenna or antennas for each transmitted radar pulse. Radar data within synthetic sub-apertures, are successively merged in N iteration steps into SAR images of increasing resolution of the surveyed region and wherein each iteration step includes forming a new SAR image at a new iteration level by a linear combination of neighboring SAR images in the previous iteration step. A radar system and a SAR processor used for calculating the detection and positioning of targets including moving and stationary targets.
摘要:
A dispenser unit for countermeasures. A magazine for the countermeasures is removably arranged on the dispenser unit. A dispensing nozzle dispenses the countermeasures out of the magazine. A movable seal is arranged within the magazine. The seal in a first position covers the dispensing nozzle and in a second position opens the dispensing nozzle, such that the countermeasures may be dispensed through the dispensing nozzle when the seal is in the second position.
摘要:
A method for validating received positional data in vehicle surveillance applications. A signal carrying a Mode S ES message including positional data indicating an alleged position of a vehicle, transmitted from a radio source is received with a radio direction finding antenna of a receiver. A bearing from the receiver to the radio source is estimated utilizing the radio direction finding antenna and received signal. A distance between the receiver and radio source based on a time of flight for a signal travelling between the receiver and radio source at known speed is estimated with a distance measurer including primary radar, laser detector and ranger, and/or secondary surveillance radar. An estimated position of the radio source is calculated based on the estimated bearing and distance. A deviation value indicating a deviation/coincidence between the alleged position is determined according to the received and estimated position of the radio source.
摘要:
The invention pertains to a display method, a computer program for performing steps of the display method and a display system. The display system (1) comprising: display means (2) comprising: a physical display unit (13)operable to display flight data, a display processing device (11), a graphics driver and a graphics processing device, fault detection means arranged to detect at least one fault condition associated to the display means (2). The display processing device is arranged to process a first task set associated to a normal operation mode and in parallel process a second task set associated to an emergency operation mode, wherein said display processing device is arranged to transmit information provided from the second task set to the graphics processing device in response to the detected at least one fault condition.
摘要:
The present invention relates to a signal directing means (1, 1′, 1″, 36) for dividing or combining signals. It comprises a bottom row first port (2), a first row first and second port (3, 4),and a bottom row signal connector (5).The signal directing means (1, 1′,1″, 36) further comprises a first row first and second amplifier (9; 9′; 10; 10′), each first row amplifier (9, 10; 9′, 10′) having a corresponding first and second terminal (9a, 10a; 9a′, 10a; 9b, 10b; 9b′, 10b), said first terminals (9a, 10a; 9a′, 10a′) being connected along the bottom row signal connector (5). The signal directing means (1, 1′, 1″, 36)also comprises a first row signal connector (11), where said second terminals (9b, 10b; 9b′, 10b) are connected along the first row signal connector (11). The second terminal (9b; 9b′) of the first row first amplifier (9, 9′) is connected to the first row first port (3) and the second terminal (10b; 10b′) of the first row second amplifier (10; 10′) is connected to the first row second port (4).Top row ports (3′, 4′, 25; 19, 20, 27, 29; 19′, 20′, 27′, 29′) each comprise a signal connector (37, 38, 39; 1 40, 41, 42, 43; 40′, 41′, 42′, 43′) and a port terminal (44, 45, 46; 47, 48, 49, 50; 47′, 48′, 49′, 50′).Connecting impedances (50, 51; 52, 53, 54) connect the top row ports (3′, 4′, 25; 19, 20, 27, 29; 19′, 20′, 27′, 29′).
摘要:
A range estimation device for use in an aerial platform including at least one passive sensor, a trajectory determination unit and a control system. A control unit is arranged to indicate to the control system to perform own-ship maneuvering of the aerial platform such that characteristics of passive sensor measurements from the at least one passive sensor enable a range estimation to a target to be determined. The control unit is arranged to determine characteristics of the own-ship maneuvering based on the range uncertainty estimations to the target. A method and a computer program product for use in range estimation device.
摘要:
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.
摘要:
A distributed power amplifier arranged to operate over a bandwidth. An input side with an input terminal is arranged to receive an input signal and connected to an input transmission line. An output side with an output terminal is adapted to deliver an output signal and connected to an output transmission line. A power splitter is connected to the input terminal, thus being arranged to divide the input signal in a first path to the input transmission line and in a second path to an input of an active matching circuit. The active matching circuit has an output connected to the output transmission line. The other end of the output transmission line is connected to the output terminal. A method to design a distributed power amplifier and to modify existing distributed power amplifiers.
摘要:
A distributed avionics system arranged in an aerial vehicle for controlling at least one avionics function. A plurality of avionics processing subsystems are interconnected in a network. Each avionics processing subsystem includes a processor arranged to process at least one task so as to provide a set of data messages including at least one unit of data related to controlling the at least one avionics function on basis of provided input data, related to conditions of the at least one avionics function. A memory module is in operative connection with the processor and is arranged to store instructions for the processor to process the at least one task. At least one of the avionics processing subsystems is arranged to transmit at least one synchronization cycle start signal onto the network.