The invention relates to a mounting arrangement (10; 20) for an antenna (11), comprising a radome (12), a first bearing (13) arranged in a top portion of the radome (12), a second bearing (14) arranged in a bottom portion of the radome (12), and a rotatable mounting frame (15; 25) having an upper portion (16), which is rotatable engaged with the first bearing (13), and a lower portion (17), which is rotatable engaged with the second bearing (14), and the rotatable mounting frame (15; 25) being configured for attachment of at least one antenna (11), wherein the radome (12) is a dome-shaped radome (12).

The invention relates to a mounting arrangement (10; 20) for an antenna (11), comprising a radome (12), a first bearing (13) arranged in a top portion of the radome (12), a second bearing (14) arranged in a bottom portion of the radome (12), and a rotatable mounting frame (15; 25) having an upper portion (16), which is rotatable engaged with the first bearing (13), and a lower portion (17), which is rotatable engaged with the second bearing (14), and the rotatable mounting frame (15; 25) being configured for attachment of at least one antenna (11), wherein the radome (12) is a dome-shaped radome (12).

A communication system using vector and scalar potential is disclosed. The system uses field-free potentials signaling for many applications where the absence of shielding effects in sea water, plasma or other dense media due to the fact that the absence of (E,B) fields eliminates the possibility of induced charge and current response in the media being transited.

The disclosure relates to an antenna arrangement, including an antenna mounted inside a radome. The antenna arrangement further includes a mounting arrangement arranged to mount the antenna arrangement to an antenna platform. The antenna is a tapered slot antenna, the radome has an aerodynamic shape, and the mounting arrangement includes two antenna fastening means and an antenna radio frequency connector arranged to interact with corresponding antenna platform fastening means and an antenna platform radio frequency connector arranged on the antenna platform.

The disclosure relates to an antenna arrangement, including an antenna mounted inside a radome. The antenna arrangement further includes a mounting arrangement arranged to mount the antenna arrangement to an antenna platform. The antenna is a tapered slot antenna, the radome has an aerodynamic shape, and the mounting arrangement includes two antenna fastening means and an antenna radio frequency connector arranged to interact with corresponding antenna platform fastening means and an antenna platform radio frequency connector arranged on the antenna platform.

Disclosed is a networked array of radar enclosures that can be arranged to cover a desired geographical location. The array can detect moving objects in the coverage area. When warranted, elements of the array can also control the movement of associated objects, for example, friendly drones. The present invention also combines attributes that facilitate the less conspicuous detection and monitoring of moving objects, with the capability of distinguishing types of moving objects.

Disclosed is a networked array of radar enclosures that can be arranged to cover a desired geographical location. The array can detect moving objects in the coverage area. When warranted, elements of the array can also control the movement of associated objects, for example, friendly drones. The present invention also combines attributes that facilitate the less conspicuous detection and monitoring of moving objects, with the capability of distinguishing types of moving objects.

An antenna module configured for use on an underwater vehicle is disclosed. The antenna module includes an array of spiral antennas fabricated on a multi-layer substrate that provides wide-band RF communication with direction finding (DF) capability. The antenna module can also include other antennas fabricated on the same multi-layer substrate, such as one or more global positioning system (GPS) receivers, an ultra-high frequency/very-high frequency (UHV/VHF) antenna, or one or more iridium antennas. The antenna module may further include a water-proof housing that is coupled to the outside hull of an undersea vehicle via a coupling mechanism. The coupling mechanism allows the antenna module to rotate between a stowed position against the hull and a deployed position that extends the antennas out away from the undersea vehicle. The antenna module is curved or flexible so it can stow against a corresponding curved hull of the undersea vehicle.

The present invention relates to a method for testing the accuracy of the automatic positioning means of a signal tracking antenna during a satellite signal searching and/or tracking operation; wherein the platform, such as a ship, on which the signal tracking antenna is mounted is kept stationary during the testing operation. The method includes the use of an unmanned aerial vehicle and a control station.

A communication system according to one embodiment comprises: a communication device including a tracking unit which rotates with respect to a first axis, a second axis, and a third axis that are orthogonal to each other and which performs radio-wave communication with a moving object moving within the field of view; and a controller for controlling the communication device so that the tracking unit rotates with respect to the first axis and the second axis in the range of a first trajectory angle of the moving body and rotates with respect to the second axis and the third axis in the range of a second trajectory angle of the moving object.