Abstract: A system for monitoring a maritime environment comprises a plurality of radio detection and ranging devices configured to perform a synchronous detection of a maritime environment object, to transmit a plurality of sensor signals respectively relating to a location of the maritime environment object over a communication network, and to receive a synchronization signal. Each radio detection and ranging device is configured to synchronize its operation according to the synchronization signal. A synchronization source is configured to generate the synchronization signal for synchronizing operations of radio detection and ranging devices, and to provide the synchronization signal over the communication network to the radio detection and ranging devices. A processing device is configured to receive the plurality of sensor signals from the plurality of radio detection and ranging devices, and to determine the location of the object in the maritime environment upon the basis of the plurality of sensor signals.

Abstract: A system for monitoring a maritime environment comprises a plurality of radio detection and ranging devices configured to perform a synchronous detection of a maritime environment object, to transmit a plurality of sensor signals respectively relating to a location of the maritime environment object over a communication network, and to receive a synchronization signal. Each radio detection and ranging device is configured to synchronize its operation according to the synchronization signal. A synchronization source is configured to generate the synchronization signal for synchronizing operations of radio detection and ranging devices, and to provide the synchronization signal over the communication network to the radio detection and ranging devices. A processing device is configured to receive the plurality of sensor signals from the plurality of radio detection and ranging devices, and to determine the location of the object in the maritime environment upon the basis of the plurality of sensor signals.

Abstract: A guard rail comprising stiffening posts, a bottom rail and a top rail connecting the posts, is fastened to a building element, for instance a concrete slab, by a fastening device. The device comprises an anchor plate permanently secured to the building element and having an upper spherical support surface. A base plate has a lower support surface received by the support surface of the anchor plate. The upper portion of the base plate has a projecting collar which receives one of said posts in vertical position. The amount of horizontal offset of the collar is such that the posts and the bottom rail may be in contact with the building element.

Abstract: The present invention relates to a nipper for slotting metal shapes of light alloy.

Abstract: This invention relates to a tie member which enables an angle joint to be produced between two obliquely cut hollow members, and consists of two non-deformable parts each of which has two arms adapted to fit into one or other of the hollow members to be joined, and means for moving one part relative to the other to enable them to be moved apart. One of the parts includes two retractable plungers which slide in openings in its arms and which are each subject to thrust from a spring which causes them to project towards the facing wall of one of the hollow members so that they will enter a bore formed in this wall. The arms of the two parts are resiliently connected together, in particular by the springs to prevent the parts from becoming detached from one another.The tie member according to the invention enables a joint to be made under conditions of remarkable ease and simplicity, and automatically ensures that the hollow members are properly clamped against one another.