Saab Automobile AB

About: Saab Automobile AB is a based out in . It is known for research contribution in the topics: Radar & Antenna (radio). The organization has 760 authors who have published 890 publications receiving 11811 citations.

A method for the measurement of relatively small water depths, especially in the vicinity of sea coasts and lake shores

Abstract: A method for measuring relatively small water depths is described. Measuring equipment for transmission having a direction in a small angle α to the perpendicular of the water depth and for receiving laser pulses of μ = about 0.5 νm is used. A first reflection from the water surface is obtained and a second reflection from the bottom. By means of signal processing the signals corresponding to the reflections the water depth is calculated. In particular, the method is characterized in that the signal processing is made in such a way that the function signal-amplitude/time is scanned and a first portion of this function is approximated by a substantially straight first line, after which the function is further scanned to pass through a minimum of its first derivative (inflection point) to a second increasing portion of the function located before a maximum point, which is approximated by a substantially straight second line, whereafter the time interval between the lines that is related to said distance is used for determining it.

Extensions of structural optimization software to enable multidisciplinary applications

Abstract: Applications of structural optimization are often multidisciplinary in nature and require nontraditional problem formulations. In the optimization system that has been developed, flexibility in terms of system design and problem formulation have been important aspects. A mathematical programming approach has been adopted where function values and sensitivity information is required from each discipline involved. To be able to deal with the demands of ongoing projects, a number of extensions have been implemented in recent years. The system is today used within the Saab and ABB companies. Four recent applications are presented to illustrate how the extended capabilities have been used.

A Cognitive Systems Engineering Perspective on Fighter Cockpit Design Evaluation

Abstract: In this paper a method for evaluating fighter aircraft cockpit design solutions is suggested, taking into account the specific needs and limitations that come from working in the context of developing modern fighter aircraft cockpit design. In this context flight simulators are an essential tool for evaluation. A general problem when using simulators for evaluations is the amount of data generated, and how to approach this data. There is a need to develop methods to manage the data and extract relevant data in order to make it usable in the design and development process. The approaches described also aim at connecting the simulator data to the overall joint goals of the pilot-fighter-aircraft system in accordance with the CSE approach to systems development.

A novel method to increase the accuracy of material characterization using free space transmission measurements

Abstract: This paper describes a method to accurately determine the electromagnetic material properties of thin dielectric sheets. For non-magnetic materials, free space transmission measurements relative to an empty setup are sufficient to determine the complex permittivity of the sheet material. Measurements have been performed on a thin resistive sheet and a transformation procedure has been applied where the edge distortion at the lower frequency band is reduced. This is accomplished by shifting the band limited frequency spectrum down to DC before applying an inverse Fourier for gating purpose. The procedure yields accurate material characterization over the entire measured frequency band.