Saab AB

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

Wireless target system

Abstract: A wireless target system unit (1) for a weapon effect simulation system, comprising a radio transmitter and receiver (2) for communication with a control system, the wireless target system unit (1) further comprising a laser receiver (6) arranged for receiving laser light from an attacking system. The wireless target system unit (1) comprises two retro-reflecting prisms (3, 4) arranged to retro-reflect an incident laser light from an attacking system, wherein each reflecting centre (3a, 4a) of said retro-reflecting prisms (3, 4) and a sensor centre (6a) of said laser receiver(6)are mounted such that they for man isosceles triangle, and that the distance (D1, D2) between the reflecting centre (3a, 4a) of each said retro-reflecting prism (3, 4) and the sensor centre (6a) of said laser receiver (6) are equal.

Reference architecture of technological demonstrators for enhanced maritime situational awareness

Abstract: In multinational defence operations, either EU or NATO driven, the exchange of surveillance and reconnaissance data and information is an essential aspect to provide to the commander the needed situational awareness. This improvement of situational awareness, especially in a maritime environment, may be achieved amongst others by extending the ISTAR performance through using unmanned systems (UxS) and integrating them into the combat management system (CMS), ensuring interoperability between the deployed forces and building the overall system based on a solid architecture. Within this frame, the OCEAN2020 (Open Cooperation for European mAritime awareNess) project, funded by the European Union's Preparatory Action on Defence Research and implemented by the European Defence Agency, sees 42 partners from 15 EU countries working together to build future maritime surveillance by integrating drones, unmanned vessels and unmanned submarines into fleet operations. Data and information will be integrated in a comprehensive (maritime) picture of developing situations, enhancing the situational awareness, and thus supporting military commanders on different unit levels in their decision making. This paper focuses on the challenge to define flexible architectures for maritime operations. The reference architecture for a system-of-systems that aims to provide enhanced situational awareness in a naval environment will be presented. The reference architecture provides reusable structures and rules, helping to reduce development and system realization time and costs. This Reference Architecture will establish strategic decisions regarding system technologies to be used and will serve as baseline for the development of two Target Architectures for the two planned demonstrations. © 2020 SPIE.

An air intake appliance for an aircraft engine

Abstract: The invention relates to an air intake appliance for an aircraft engine. At least one channel wall (1) of the air intake appliance (20) is provided on at least a part of its inner surface with several essentially parallel ducts (2) arranged side by side for conducting hot gas along said inner surface of the channel wall in order to transfer heat from the hot gas to the channel wall and thereby prevent formation of ice on the outer surface (1 a) thereof. Said ducts comprise alternately arranged inflow ducts (2a) and outflow ducts (2b). Distribution means (10, 24) are provided for distributing hot gas to the inflow ducts (2a), and the inflow ducts (2a) are so connected to the outflow ducts (2b) that the hot gas from the distribution means (10, 24) will first flow through an inflow duct (2a) and thereafter through an outflow duct (2b). The invention also relates to an aircraft engine provided with such an air intake appliance.

System and method for the simulation of explosive devices

Abstract: Explosive device simulation system comprising at least one explosive device simulator (1) having means to receive (4) and store (5) information concerning its position and means to communicate (4) said information and a method of laying at least one such explosive device simulator (1) comprising the step of providing the, or each explosive device simulator (1) with information concerning its position.

Analysis of Lateral Thermal Coupling for GaN MMIC Technologies

Abstract: This paper presents a study of the lateral heat propagation in an aluminum gallium nitride/gallium nitride (AlGaN/GaN) heterostructure grown on a silicon carbide substrate The study is enabled by the design of a temperature sensor that utilizes the temperature-dependent $I$ – $V$ characteristic of a semiconductor resistor, making it suitable for integration in GaN monolithic microwave integrated circuit technologies Using the sensor, we are able to characterize the thermal transient response and extract lateral thermal time constants from the measurements Time constants in the range from 25 $\mu \text{s}$ to 12 ms are identified Furthermore, the heat propagation properties are characterized for heat source-to-sensor distances of 86– $484~\mu \text{m}$ , resulting in delay times from 35 to $111~\mu \text{s}$ It is shown that both the time constants and propagation delay increase with temperature An empirical model of the sensor current versus temperature and voltage is proposed and used to predict the junction temperature of the sensor The study provides knowledge for heat management design and proposes an integrated temperature measurement solution for future highly integrated GaN applications