Matra

About: Matra is a based out in . It is known for research contribution in the topics: Signal & Detector. The organization has 1330 authors who have published 1216 publications receiving 17967 citations.

Integrity management in GUARDS

Abstract: We present an approach for the management of highly critical tasks coexisting with non-critical tasks in a single processor or multiprocessor architecture. To prevent error propagation from non-critical to critical tasks, an integrity level is assigned to groups of tasks according to their trustworthiness. Multiple levels of integrity are implemented using spatial and temporal isolation, and mediation via an integrity policy. The integrity policy defines the rules for data flow between integrity levels and resource utilisation by the tasks at different levels. Since the GUARDS project aims to provide generic solutions for a variety of application domains, the described integrity management can be implemented either in a middleware, the operating system or both. In this paper, we show a CORBA-compliant implementation of the integrity policy.

Multiagent architecture for scene interpretation

Abstract: Scene interpretation is a crucial problem for navigation and guidance systems. The necessary integration of a large variety of heterogeneous knowledge leads us to design an architecture that distributes knowledge and that performs parallel and concurrent processing. We choose a multi- agent approach which specialized agents implementation is based on incrementality, distribution, cooperation, attention mechanism and adaptability.© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Simulation of laser detection and ranging (LADAR) and forward-looking infrared (FLIR) data for autonomous tracking of airborne objects

Abstract: This paper presents the results of an investigation leading into an implementation of FLIR and LADAR data simulation for use in a multi sensor data fusion automated target recognition system. At present the main areas of application are in military environments but systems can easily be adapted to other areas such as security applications, robotics and autonomous cars. Recent developments have been away from traditional sensor modeling and toward modeling of features that are external to the system, such as atmosphere and part occlusion, to create a more realistic and rounded system. We have implemented such techniques and introduced a means of inserting these models into a highly detailed scene model to provide a rich data set for later processing. From our study and implementation we are able to embed sensor model components into a commercial graphics and animation package, along with object and terrain models, which can be easily used to create a more realistic sequence of images.© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Ringer circuit, particularly for a telephone set

Abstract: The ringer comprises a loudspeaker receiving signals from an amplifier, the amplifier having both a power supply input connected to a ringer line providing a ringer signal via a chopper power supply means, and a melody input which is connected to the ringer line via a regulation unit that provides an image signal representative of the power of the ringer signal, and via a transformation unit that transforms the image signal by means of a melody signal applied to a terminal.