Abstract: A support system (1) for traffic support of ships (20a, 20b, 21a, 21b), having AIS ship reception units for receiving AIS radio signals containing ship traffic data, is characterized in that at least one flight object (2) is provided, comprising at least one AIS flight transmission unit (3), which is designed to transmit AIS radio signals containing ship traffic data inside an AIS transmission range (10) in such a manner that the transmitted AIS radio signals can be received by the ships (20a, 20b, 21a, 21b) located inside the AIS transmission range (10) by means of their respective AIS ship reception units.

Abstract: The invention relates to a monitoring system for the air-traffic control of flight objects (5, 6), which have transmitting units for emitting air-traffic control radio signals (ADS-B), wherein the air-traffic control radio signals (ADS-B) containing flight data concerning the respective aircraft (5, 6), the monitoring system comprising a plurality of receiving units (4a to 4c), which are designed to receive the emitted air-traffic control radio signals, wherein a plurality of satellites (1a to 1c) are provided, which each have communication means for forming a common satellite communication network and on each of which at least one of the receiving units (4a to 4c) is arranged, wherein the receiving units (4a to 4c) are connected to the communication means of the respective satellite (1a to 1c) and are designed to transmit the flight data contained in the air-traffic control radio signals to at least one ground station (3, 7) having a communication connection to the satellite communication network using a com

Abstract: The invention comprises a satellite (1) having at least one transmitting and/or receiving unit (2), which has an antenna assembly (3) for transmitting and/or receiving air-traffic control radio signals (4), wherein the antenna assembly (3) has a plurality of directional antennas (6a to 6c), which each form a respective transmitting and/or receiving sector (7a to 7c, 22a to 22e) within a defined transmitting and/or receiving area (21) and are designed to transmit and/or receive air-traffic control radio signals (4) in the respective transmitting and/or receiving sector (7a to 7c, 22a to 22e) of the directional antenna.

Abstract: A support system (1) for traffic support of ships (20a, 20b, 21a, 21b), having AIS ship reception units for receiving AIS radio signals containing ship traffic data, is characterized in that at least one flight object (2) is provided, comprising at least one AIS flight transmission unit (3), which is designed to transmit AIS radio signals containing ship traffic data inside an AIS transmission range (10) in such a manner that the transmitted AIS radio signals can be received by the ships (20a, 20b, 21a, 21b) located inside the AIS transmission range (10) by means of their respective AIS ship reception units.

Abstract: A compressible and deployable helical antenna (2) includes a supporting structure (7) having a helical shape. The supporting structure (7) includes a core (18), especially of foamed material, and a carrier layer (19) of composite fiber material, the carrier layer (19) being located on the core (18). An electrically conducting layer (8) is located on the carrier layer (19). An antenna unit (1) includes the compressible and deployable helical antenna (2) and a reflector plate (3). The reflector plate (3) is connected to the helical antenna (2).

Abstract: The invention relates to a monitoring system for the air-traffic control of flight objects (5, 6), which have transmitting units for emitting air-traffic control radio signals (ADS-B), wherein the air-traffic control radio signals (ADS-B) containing flight data concerning the respective aircraft (5, 6), the monitoring system comprising a plurality of receiving units (4a to 4c), which are designed to receive the emitted air-traffic control radio signals, wherein a plurality of satellites (1a to 1c) are provided, which each have communication means for forming a common satellite communication network and on each of which at least one of the receiving units (4a to 4c) is arranged, wherein the receiving units (4a to 4c) are connected to the communication means of the respective satellite (1a to 1c) and are designed to transmit the flight data contained in the air-traffic control radio signals to at least one ground station (3, 7) having a communication connection to the satellite communication network using a com

Abstract: The invention comprises a satellite (1) having at least one transmitting and/or receiving unit (2), which has an antenna assembly (3) for transmitting and/or receiving air-traffic control radio signals (4), wherein the antenna assembly (3) has a plurality of directional antennas (6a to 6c), which each form a respective transmitting and/or receiving sector (7a to 7c, 22a to 22e) within a defined transmitting and/or receiving area (21) and are designed to transmit and/or receive air-traffic control radio signals (4) in the respective transmitting and/or receiving sector (7a to 7c, 22a to 22e) of the directional antenna.

Abstract: A compressible and deployable helical antenna (2) includes a supporting structure (7) having a helical shape. The supporting structure (7) includes a core (18), especially of foamed material, and a carrier layer (19) of composite fiber material, the carrier layer (19) being located on the core (18). An electrically conducting layer (8) is located on the carrier layer (19). An antenna unit (1) includes the compressible and deployable helical antenna (2) and a reflector plate (3). The reflector plate (3) is connected to the helical antenna (2).